Calvert Tax-Free Bond Fund (CTTLX)

Daily Performance (as of 6/17/2013)
Price $15.98
Price Change $0.01 (0.06%)
YTD Return (3.75% Sales Charge) -5.90%
YTD Return (No Charge) -2.26%
Average Maturity
(rounded to nearest year or day) 		12 Years
Daily 30-Day SEC Yield 1.89%
12 Mth Distribution Yield
(3.75% Sales Charge)		 2.91%
12 Mth Distribution Yield
(No Charge)		 3.02%
Fund Facts (as of 6/17/2013)
NASDAQ Symbol CTTLX (A Shares)
Calvert Fund Number 913 (A Shares)
CUSIP Number 131620304 (A Shares)
Assets Under Management $162.81 Million
Duration (as of 3/31/2013)
Effective Duration 4.77 Years

Overview

Fund Management

Calvert Investment Management, Inc.

Thomas A. Dailey,
Vice President and Portfolio Manager

Top 10 Holdings

Top 10 Equity Holdings

The top 10 companies in which the portfolio invests, measured by a percentage of total investments.

Investment Objective

The Fund seeks to earn the highest level of interest income, exempt from federal income taxes, as is consistent with prudent investment management, preservation of capital, and the quality and maturity characteristics of the Fund.

Investment Strategy

Under normal market conditions, at least 80% of the income from the Fund will be exempt from federal income tax. The Fund typically invests at least 65% of its net assets in investment grade debt securities. The Fund may invest in a variety of tax-exempt obligations including tax-supported debt, various types of revenue debt, special tax obligations, qualified private activity bonds, municipal leases, and certificates of participation in such investments. The Advisor looks for securities with strong credit quality that are attractively priced in various maturity ranges. There is no upper or lower limit on the Fund's average maturity or average duration. The Fund seeks to avoid investing in tobacco companies.

Investment Risk

Investment in mutual funds involves risk, including possible loss of principal invested. You could lose money on your investment in the Fund or the Fund could underperform because of the following risks: the market prices of bonds held by the Fund may fall; individual investments of the Fund may not perform as expected; and/or the Fund’s portfolio management practices may not achieve the desired result. Bond funds are subject to interest rate risk and credit risk. When interest rates rise, the value of fixed-income securities will generally fall. In addition, the credit quality of the securities may deteriorate, which could lead to default or bankruptcy of the issuer where the issuer becomes unable to pay its obligations when due. The prices of long-term bonds are more sensitive to changes in interest rates than the prices of short-term bonds. Therefore, in general, long-term bonds have more interest rate risk than short-term bonds. The Fund is nondiversified and may be more volatile than a diversified fund. Some income may be subject to state and local taxes and to the federal alternative minimum tax.

Sector Weights as of 3/31/2013

Fund
GO Bond 29.30% 27.19%
Revenue Bond 41.85% 66.70%
Prefunded Bond 7.09% 5.85%
Insured Bond 25.43% 0.27%
Other Revenue 5.47% -
Cash/Hedges -9.14% -
TOTAL 100.00% 100.01%
Source: Calvert Investment Management, Inc.

Important Disclosure

Holdings are subject to change.

Performance

Select additional indices to display below:

Benchmark Index

Checking this box will compare fund performance to that of its benchmark index.

Lipper Category Index

Checking this box will compare fund performance to that of its Lipper Category Index.
Average Annual Total Returns (%) for period ending 5/31/2013
Share Class YTD QTD 1 yr 3 yrs 5 yrs 10 yrs Since Inception Inception
A Shares (3.75% Sales Charge) -4.08 -4.13 -0.58 3.10 2.88 2.74 6.05 8/23/1983
A Shares (No Charge) -0.36 -0.39 3.28 4.41 3.68 3.14 6.19 8/23/1983
Average Annual Total Returns (%) for period ending 3/31/2013
Share Class YTD QTD 1 yr 3 yrs 5 yrs 10 yrs Since Inception Inception
A Shares (3.75% Sales Charge) -3.70 -3.70 1.39 3.69 3.39 3.17 6.10 8/23/1983
A Shares (No Charge) 0.03 0.03 5.37 5.02 4.19 3.57 6.24 8/23/1983
The performance data quoted represents past performance, which does not guarantee future results. The investment return and principal value of an investment will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Current performance may be higher or lower than the performance data quoted. Index reflects no deductions for fees or expenses. An investor cannot invest directly in an index. Visit www.calvert.com to obtain performance data current to the most recent month-end. Returns for periods of less than one year are not annualized.
Portfolio Expenses and Turnover (from Prospectus)
(Performance data quoted above already reflects deduction for portfolio operating expenses)
Expense Ratio
(if no waiver reimbursement in effect)		 Net Expense Ratio
(if waiver reimbursement in effect)		 Gross Expense Ratio
(if waiver reimbursement in effect)		 Fund Turnover
0.90% n/a n/a 35.00%

Hypothetical Growth of $10,000

Yearly Percentage Return

Modern Portfolio Theory Statistics* as of 3/31/2013

  Fund (AShares) Barclays Municipal Bond Index
  3 yrs 5 yrs 3 yrs 5 yrs
Alpha -1.81% -1.97% 0.00% 0.00%
Beta 1.11 1.03 1.00 1.00
R-Squared 92.21% 90.33% 100.00% 100.00%
Sharpe Ratio 1.13 0.76 1.63 1.23
Standard Deviation 4.37% 5.13% 3.77% 4.73%
Excess Return -1.20% -1.91% 0.00% 0.00%
Information Ratio -0.93 -1.19 0.00 0.00
Tracking Error 1.29% 1.60% 0.00% 0.00%
*Source: Zephyr StyleADVISOR using MorningstarTM data


Standard Deviation is a measure of a fund's risk. A standard deviation of 1 means a fund can be expected to produce an annual return that is +/-1% of its average annual return 66% of the time.
Alpha is a measure of the difference between a fund's actual returns and its expected performance, given its level of risk as measured by beta.
Beta is a measure of portfolio risk relative to the market or benchmark. A portfolio beta of 1.0 indicates a risk level equal to that of the fund's benchmark.
Excess Return is return in excess of the risk-free rate or in excess of a benchmark.
R Squared is a statistical measure that represents the percentage of a fund's movements that can be explained by movements in its benchmark index.
Tracking Error is the difference in the return earned by a portfolio and the return earned by the benchmark against which the portfolio is constructed.
Information Ratio is a measure of the consistency of excess return of a mutual fund as compared to its benchmark.
Sharpe Ratio is used to measure risk-adjusted performance. It is calculated by using standard deviation and return in excess of the benchmark to determine reward per unit of risk.

Important Disclosure

Prior to July 13, 2009, the Calvert Tax-Free Bond Fund emphasized investments in long-term fixed income securities and the returns shown above are the result of that investment management strategy. At a shareholder meeting held on July 13, 2009, the Fund's "Principal Investment Strategies" were amended to permit the Fund's portfolio manager to manage the Fund as a flexible duration fund without any upper or lower limit on the Fund's average maturity or average duration. The Fund's performance after July 13, 2009 reflects the Fund's new investment management strategy, which will cause the Fund to have, at times, a significantly shorter weighted average maturity and effective duration than it did prior to July 13, 2009. Past performance is no guarantee of future results.

Pricing & Distribution

Most Recent Distributions

A Shares: Without Sales Charge
Date Type Rate Record Date Ex Date Reinvest Date Reinvest Price
5/31/2013 Dividend 0.03766 5/29/2013 5/30/2013 5/30/2013 16.31
4/26/2013 Dividend 0.03853 4/24/2013 4/25/2013 4/25/2013 16.56
3/28/2013 Dividend 0.03748 3/26/2013 3/27/2013 3/27/2013 16.42
2/28/2013 Dividend 0.03946 2/26/2013 2/27/2013 2/27/2013 16.57
1/31/2013 Dividend 0.03820 1/29/2013 1/30/2013 1/30/2013 16.59
12/28/2012 Dividend 0.04181 12/26/2012 12/27/2012 12/27/2012 16.52
11/30/2012 Dividend 0.04099 11/28/2012 11/29/2012 11/29/2012 16.87
11/2/2012 Dividend 0.04148 10/31/2012 11/1/2012 11/1/2012 16.59
9/28/2012 Dividend 0.04345 9/26/2012 9/27/2012 9/27/2012 16.47
8/31/2012 Dividend 0.04210 8/29/2012 8/30/2012 8/30/2012 16.43
7/27/2012 Dividend 0.04117 7/25/2012 7/26/2012 7/26/2012 16.47
6/29/2012 Dividend 0.03996 6/27/2012 6/28/2012 6/28/2012 16.15
5/31/2012 Dividend 0.03999 5/29/2012 5/30/2012 5/30/2012 16.24
4/27/2012 Dividend 0.03995 4/25/2012 4/26/2012 4/26/2012 16.18
3/30/2012 Dividend 0.03910 3/28/2012 3/29/2012 3/29/2012 16.06
2/24/2012 Dividend 0.03943 2/22/2012 2/23/2012 2/23/2012 16.23
1/27/2012 Dividend 0.03982 1/25/2012 1/26/2012 1/26/2012 16.18
12/23/2011 Dividend 0.04023 12/21/2011 12/22/2011 12/22/2011 15.78
11/23/2011 Dividend 0.04105 11/21/2011 11/22/2011 11/22/2011 15.56
10/28/2011 Dividend 0.04041 10/26/2011 10/27/2011 10/27/2011 15.48
9/30/2011 Dividend 0.04253 9/28/2011 9/29/2011 9/29/2011 15.64
8/26/2011 Dividend 0.04159 8/24/2011 8/25/2011 8/25/2011 15.52
7/29/2011 Dividend 0.04182 7/27/2011 7/28/2011 7/28/2011 15.34
6/30/2011 Dividend 0.04244 6/28/2011 6/29/2011 6/29/2011 15.41
5/27/2011 Dividend 0.04137 5/25/2011 5/26/2011 5/26/2011 15.37
4/29/2011 Dividend 0.04258 4/27/2011 4/28/2011 4/28/2011 15.10
3/31/2011 Dividend 0.04156 3/29/2011 3/30/2011 3/30/2011 14.92
2/25/2011 Dividend 0.04434 2/23/2011 2/24/2011 2/24/2011 14.93
1/28/2011 Dividend 0.04313 1/26/2011 1/27/2011 1/27/2011 14.74
12/23/2010 Dividend 0.04158 12/21/2010 12/22/2010 12/22/2010 15.10
12/3/2010 Long Term Gain 0.01793 12/1/2010 12/2/2010 12/2/2010 15.41
11/24/2010 Dividend 0.04113 11/22/2010 11/23/2010 11/23/2010 15.39
10/29/2010 Dividend 0.04165 10/27/2010 10/28/2010 10/28/2010 15.82
9/30/2010 Dividend 0.04173 9/28/2010 9/29/2010 9/29/2010 15.98
8/27/2010 Dividend 0.04125 8/25/2010 8/26/2010 8/26/2010 16.02
7/30/2010 Dividend 0.04119 7/28/2010 7/29/2010 7/29/2010 15.76
6/25/2010 Dividend 0.04209 6/23/2010 6/24/2010 6/24/2010 15.62
5/28/2010 Dividend 0.04061 5/26/2010 5/27/2010 5/27/2010 15.71
4/30/2010 Dividend 0.04030 4/28/2010 4/29/2010 4/29/2010 15.67
3/26/2010 Dividend 0.03981 3/24/2010 3/25/2010 3/25/2010 15.60
2/26/2010 Dividend 0.04171 2/24/2010 2/25/2010 2/25/2010 15.68
1/29/2010 Dividend 0.03898 1/27/2010 1/28/2010 1/28/2010 15.61
12/24/2009 Dividend 0.04057 12/22/2009 12/23/2009 12/23/2009 15.61
12/3/2009 Long Term Gain 0.03293 12/1/2009 12/2/2009 12/2/2009 15.64
11/25/2009 Dividend 0.04024 11/23/2009 11/24/2009 11/24/2009 15.58
10/30/2009 Dividend 0.03754 10/28/2009 10/29/2009 10/29/2009 15.54
9/25/2009 Dividend 0.03959 9/23/2009 9/24/2009 9/24/2009 15.85
8/28/2009 Dividend 0.03237 8/26/2009 8/27/2009 8/27/2009 15.66
7/31/2009 Dividend 0.05224 7/29/2009 7/30/2009 7/30/2009 15.62
6/26/2009 Dividend 0.04934 6/24/2009 6/25/2009 6/25/2009 15.39
5/29/2009 Dividend 0.04849 5/27/2009 5/28/2009 5/28/2009 15.68
4/30/2009 Dividend 0.05008 4/28/2009 4/29/2009 4/29/2009 15.57
3/27/2009 Dividend 0.04863 3/25/2009 3/26/2009 3/26/2009 15.25
2/27/2009 Dividend 0.05150 2/25/2009 2/26/2009 2/26/2009 15.37
1/30/2009 Dividend 0.04924 1/28/2009 1/29/2009 1/29/2009 15.42
12/24/2008 Dividend 0.04868 12/22/2008 12/23/2008 12/23/2008 14.60
11/26/2008 Dividend 0.05513 11/24/2008 11/25/2008 11/25/2008 14.77
10/30/2008 Dividend 0.05140 10/28/2008 10/29/2008 10/29/2008 14.77
9/26/2008 Dividend 0.05201 9/24/2008 9/25/2008 9/25/2008 15.21
8/28/2008 Dividend 0.05095 8/26/2008 8/27/2008 8/27/2008 15.89
7/31/2008 Dividend 0.04985 7/29/2008 7/30/2008 7/30/2008 15.73
6/27/2008 Dividend 0.04795 6/25/2008 6/26/2008 6/26/2008 15.79
5/30/2008 Dividend 0.05044 5/28/2008 5/29/2008 5/29/2008 16.03
4/25/2008 Dividend 0.05244 4/23/2008 4/24/2008 4/24/2008 15.98
3/28/2008 Dividend 0.05238 3/26/2008 3/27/2008 3/27/2008 15.80
2/28/2008 Dividend 0.05391 2/26/2008 2/27/2008 2/27/2008 15.75
1/31/2008 Dividend 0.05134 1/29/2008 1/30/2008 1/30/2008 16.32
12/28/2007 Dividend 0.05207 12/26/2007 12/27/2007 12/27/2007 16.21
11/29/2007 Dividend 0.05228 11/27/2007 11/28/2007 11/28/2007 16.24
10/26/2007 Dividend 0.05193 10/24/2007 10/25/2007 10/25/2007 16.34
9/28/2007 Dividend 0.04445 9/26/2007 9/27/2007 9/27/2007 16.24
8/30/2007 Dividend 0.04444 8/28/2007 8/29/2007 8/29/2007 16.03
7/27/2007 Dividend 0.05345 7/25/2007 7/26/2007 7/26/2007 16.23
6/29/2007 Dividend 0.05309 6/27/2007 6/28/2007 6/28/2007 16.16
5/31/2007 Dividend 0.05222 5/29/2007 5/30/2007 5/30/2007 16.37
4/27/2007 Dividend 0.05453 4/25/2007 4/26/2007 4/26/2007 16.46
3/30/2007 Dividend 0.05314 3/28/2007 3/29/2007 3/29/2007 16.49
2/23/2007 Dividend 0.05433 2/21/2007 2/22/2007 2/22/2007 16.52
1/26/2007 Dividend 0.05479 1/24/2007 1/25/2007 1/25/2007 16.44
12/28/2006 Dividend 0.05197 12/26/2006 12/27/2006 12/27/2006 16.58
11/22/2006 Dividend 0.05318 11/20/2006 11/21/2006 11/21/2006 16.63
10/27/2006 Dividend 0.05418 10/25/2006 10/26/2006 10/26/2006 16.51
9/28/2006 Dividend 0.05407 9/26/2006 9/27/2006 9/27/2006 16.63
8/25/2006 Dividend 0.05290 8/23/2006 8/24/2006 8/24/2006 16.52
7/28/2006 Dividend 0.05492 7/26/2006 7/27/2006 7/27/2006 16.34
6/29/2006 Dividend 0.06308 6/27/2006 6/28/2006 6/28/2006 16.22
5/26/2006 Dividend 0.05511 5/24/2006 5/25/2006 5/25/2006 16.38
4/27/2006 Dividend 0.05428 4/25/2006 4/26/2006 4/26/2006 16.32
3/30/2006 Dividend 0.05121 3/28/2006 3/29/2006 3/29/2006 16.44
2/24/2006 Dividend 0.05664 2/22/2006 2/23/2006 2/23/2006 16.59
1/27/2006 Dividend 0.05448 1/25/2006 1/26/2006 1/26/2006 16.53
12/29/2005 Dividend 0.05408 12/27/2005 12/28/2005 12/28/2005 16.52
12/9/2005 Long Term Gain 0.10230 12/7/2005 12/8/2005 12/8/2005 16.47
11/23/2005 Dividend 0.05506 11/21/2005 11/22/2005 11/22/2005 16.54
10/28/2005 Dividend 0.05461 10/26/2005 10/27/2005 10/27/2005 16.51
9/29/2005 Dividend 0.05862 9/27/2005 9/28/2005 9/28/2005 16.66
8/26/2005 Dividend 0.05716 8/24/2005 8/25/2005 8/25/2005 16.75
7/28/2005 Dividend 0.05725 7/26/2005 7/27/2005 7/27/2005 16.71
6/24/2005 Dividend 0.05891 6/22/2005 6/23/2005 6/23/2005 16.77
5/27/2005 Dividend 0.06007 5/25/2005 5/26/2005 5/26/2005 16.76
4/28/2005 Dividend 0.05562 4/26/2005 4/27/2005 4/27/2005 16.68
3/24/2005 Dividend 0.05396 3/22/2005 3/23/2005 3/23/2005 16.54
2/25/2005 Dividend 0.05535 2/23/2005 2/24/2005 2/24/2005 16.72
1/28/2005 Dividend 0.05454 1/26/2005 1/27/2005 1/27/2005 16.73
12/29/2004 Dividend 0.05438 12/27/2004 12/28/2004 12/28/2004 16.58
11/24/2004 Dividend 0.05500 11/22/2004 11/23/2004 11/23/2004 16.57
10/28/2004 Dividend 0.05479 10/26/2004 10/27/2004 10/27/2004 16.66
9/24/2004 Dividend 0.05618 9/22/2004 9/23/2004 9/23/2004 16.69
8/27/2004 Dividend 0.05513 8/25/2004 8/26/2004 8/26/2004 16.56
7/29/2004 Dividend 0.05442 7/27/2004 7/28/2004 7/28/2004 16.45
6/25/2004 Dividend 0.05440 6/23/2004 6/24/2004 6/24/2004 16.35
5/27/2004 Dividend 0.05431 5/25/2004 5/26/2004 5/26/2004 16.31
4/29/2004 Dividend 0.05271 4/27/2004 4/28/2004 4/28/2004 16.56
3/26/2004 Dividend 0.05318 3/24/2004 3/25/2004 3/25/2004 17.16
2/26/2004 Dividend 0.05031 2/24/2004 2/25/2004 2/25/2004 17.17
1/29/2004 Dividend 0.05695 1/27/2004 1/28/2004 1/28/2004 16.91
12/30/2003 Dividend 0.06184 12/26/2003 12/29/2003 12/29/2003 16.95
12/30/2003 Long Term Gain 0.20897 12/26/2003 12/29/2003 12/29/2003 16.95
11/21/2003 Dividend 0.05367 11/19/2003 11/20/2003 11/20/2003 17.07
10/30/2003 Dividend 0.05683 10/28/2003 10/29/2003 10/29/2003 16.92
9/26/2003 Dividend 0.05806 9/24/2003 9/25/2003 9/25/2003 16.96
8/28/2003 Dividend 0.05571 8/26/2003 8/27/2003 8/27/2003 16.57
7/25/2003 Dividend 0.05319 7/23/2003 7/24/2003 7/24/2003 16.88
6/27/2003 Dividend 0.05454 6/25/2003 6/26/2003 6/26/2003 17.38
5/29/2003 Dividend 0.05901 5/27/2003 5/28/2003 5/28/2003 17.50
4/25/2003 Dividend 0.05592 4/23/2003 4/24/2003 4/24/2003 17.06
3/28/2003 Dividend 0.06410 3/26/2003 3/27/2003 3/27/2003 16.88
2/27/2003 Dividend 0.05262 2/25/2003 2/26/2003 2/26/2003 17.00
1/30/2003 Dividend 0.06046 1/28/2003 1/29/2003 1/29/2003 16.80
12/30/2002 Dividend 0.06241 12/26/2002 12/27/2002 12/27/2002 16.94
12/6/2002 Long Term Gain 0.10681 12/4/2002 12/5/2002 12/5/2002 16.71
12/6/2002 Short Term Gain 0.06129 12/4/2002 12/5/2002 12/5/2002 16.71
11/22/2002 Dividend 0.05862 11/20/2002 11/21/2002 11/21/2002 16.86
10/25/2002 Dividend 0.06181 10/23/2002 10/24/2002 10/24/2002 16.66
9/27/2002 Dividend 0.05402 9/25/2002 9/26/2002 9/26/2002 17.45
8/29/2002 Dividend 0.06371 8/27/2002 8/28/2002 8/28/2002 16.99
7/26/2002 Dividend 0.06068 7/24/2002 7/25/2002 7/25/2002 16.89
6/27/2002 Dividend 0.05915 6/25/2002 6/26/2002 6/26/2002 16.67
5/30/2002 Dividend 0.06228 5/28/2002 5/29/2002 5/29/2002 16.47
4/26/2002 Dividend 0.06029 4/24/2002 4/25/2002 4/25/2002 16.42
3/27/2002 Dividend 0.05919 3/25/2002 3/26/2002 3/26/2002 16.16
2/22/2002 Dividend 0.05615 2/20/2002 2/21/2002 2/21/2002 16.51
1/25/2002 Dividend 0.06012 1/23/2002 1/24/2002 1/24/2002 16.40
12/28/2001 Dividend 0.06233 12/26/2001 12/27/2001 12/27/2001 16.17
12/28/2001 Long Term Gain 0.01351 12/26/2001 12/27/2001 12/27/2001 16.17
12/7/2001 Long Term Gain 0.11978 12/5/2001 12/6/2001 12/6/2001 16.34
11/29/2001 Dividend 0.06087 11/27/2001 11/28/2001 11/28/2001 16.53
10/26/2001 Dividend 0.06365 10/24/2001 10/25/2001 10/25/2001 16.77
9/27/2001 Dividend 0.06219 9/25/2001 9/26/2001 9/26/2001 16.64
8/30/2001 Dividend 0.05872 8/28/2001 8/29/2001 8/29/2001 16.92
7/27/2001 Dividend 0.06059 7/25/2001 7/26/2001 7/26/2001 16.59
6/28/2001 Dividend 0.05616 6/26/2001 6/27/2001 6/27/2001 16.45
5/25/2001 Dividend 0.05918 5/23/2001 5/24/2001 5/24/2001 16.30
4/27/2001 Dividend 0.05772 4/25/2001 4/26/2001 4/26/2001 16.21
3/29/2001 Dividend 0.06242 3/27/2001 3/28/2001 3/28/2001 16.56
2/23/2001 Dividend 0.05795 2/21/2001 2/22/2001 2/22/2001 16.45
1/26/2001 Dividend 0.06438 1/24/2001 1/25/2001 1/25/2001 16.43
12/22/2000 Dividend 0.06931 12/20/2000 12/21/2000 12/21/2000 16.42
11/22/2000 Dividend 0.06323 11/20/2000 11/21/2000 11/21/2000 15.85
10/27/2000 Dividend 0.06436 10/25/2000 10/26/2000 10/26/2000 15.89
9/28/2000 Dividend 0.06244 9/26/2000 9/27/2000 9/27/2000 15.78
8/25/2000 Dividend 0.06288 8/23/2000 8/24/2000 8/24/2000 15.98
7/28/2000 Dividend 0.06272 7/26/2000 7/27/2000 7/27/2000 15.79
6/29/2000 Dividend 0.06223 6/27/2000 6/28/2000 6/28/2000 15.58
5/26/2000 Dividend 0.06516 5/24/2000 5/25/2000 5/25/2000 15.17
4/28/2000 Dividend 0.06121 4/26/2000 4/27/2000 4/27/2000 15.48
3/30/2000 Dividend 0.06345 3/28/2000 3/29/2000 3/29/2000 15.61
2/25/2000 Dividend 0.06011 2/23/2000 2/24/2000 2/24/2000 15.31
1/28/2000 Dividend 0.06395 1/26/2000 1/27/2000 1/27/2000 15.17
12/23/1999 Dividend 0.06152 12/21/1999 12/22/1999 12/22/1999 15.27
11/24/1999 Dividend 0.05939 11/22/1999 11/23/1999 11/23/1999 15.47
10/29/1999 Dividend 0.06091 10/27/1999 10/28/1999 10/28/1999 15.29
9/24/1999 Dividend 0.05779 9/22/1999 9/23/1999 9/23/1999 15.62
8/27/1999 Dividend 0.05700 8/25/1999 8/26/1999 8/26/1999 15.76
7/30/1999 Dividend 0.05771 7/28/1999 7/29/1999 7/29/1999 16.04
6/25/1999 Dividend 0.05616 6/23/1999 6/24/1999 6/24/1999 16.04
5/28/1999 Dividend 0.05978 5/26/1999 5/27/1999 5/27/1999 16.38
4/30/1999 Dividend 0.05634 4/28/1999 4/29/1999 4/29/1999 16.68
3/26/1999 Dividend 0.05990 3/24/1999 3/25/1999 3/25/1999 16.65
2/26/1999 Dividend 0.05418 2/24/1999 2/25/1999 2/25/1999 16.65
2/26/1999 Long Term Gain 0.07165 2/24/1999 2/25/1999 2/25/1999 16.65
1/29/1999 Dividend 0.06030 1/27/1999 1/28/1999 1/28/1999 16.94
12/24/1998 Dividend 0.06939 12/22/1998 12/23/1998 12/23/1998 16.78
12/24/1998 Long Term Gain 0.38352 12/22/1998 12/23/1998 12/23/1998 16.78
12/24/1998 Short Term Gain 0.03658 12/22/1998 12/23/1998 12/23/1998 16.78
11/25/1998 Dividend 0.06331 11/23/1998 11/24/1998 11/24/1998 17.23
10/30/1998 Dividend 0.07003 10/28/1998 10/29/1998 10/29/1998 17.28
9/25/1998 Dividend 0.06888 9/23/1998 9/24/1998 9/24/1998 17.35
8/28/1998 Dividend 0.06638 8/26/1998 8/27/1998 8/27/1998 17.26
7/31/1998 Dividend 0.06454 7/29/1998 7/30/1998 7/30/1998 17.05
6/26/1998 Dividend 0.06362 6/24/1998 6/25/1998 6/25/1998 17.06
5/29/1998 Dividend 0.06145 5/27/1998 5/28/1998 5/28/1998 17.08
4/24/1998 Dividend 0.06771 4/22/1998 4/23/1998 4/23/1998 16.89
3/27/1998 Dividend 0.06851 3/25/1998 3/26/1998 3/26/1998 17.10
3/27/1998 Long Term Gain 0.09337 3/25/1998 3/26/1998 3/26/1998 17.10
2/27/1998 Dividend 0.06429 2/25/1998 2/26/1998 2/26/1998 17.29
1/30/1998 Dividend 0.06955 1/28/1998 1/29/1998 1/29/1998 17.35
12/24/1997 Dividend 0.07354 12/22/1997 12/23/1997 12/23/1997 17.25
12/24/1997 Long Term Gain 0.02082 12/22/1997 12/23/1997 12/23/1997 17.25
11/26/1997 Dividend 0.06781 11/24/1997 11/25/1997 11/25/1997 17.05
10/31/1997 Dividend 0.07163 10/29/1997 10/30/1997 10/30/1997 17.04
9/26/1997 Dividend 0.07071 9/24/1997 9/25/1997 9/25/1997 16.99
8/29/1997 Dividend 0.07258 8/27/1997 8/28/1997 8/28/1997 16.87
7/25/1997 Dividend 0.07148 7/23/1997 7/24/1997 7/24/1997 17.10
6/27/1997 Dividend 0.07212 6/25/1997 6/26/1997 6/26/1997 16.75
5/30/1997 Dividend 0.07485 5/28/1997 5/29/1997 5/29/1997 16.65
4/25/1997 Dividend 0.07033 4/23/1997 4/24/1997 4/24/1997 16.45
3/27/1997 Dividend 0.07921 3/25/1997 3/26/1997 3/26/1997 16.57
2/28/1997 Dividend 0.07337 2/26/1997 2/27/1997 2/27/1997 16.77
1/31/1997 Dividend 0.07978 1/29/1997 1/30/1997 1/30/1997 16.66
12/27/1996 Dividend 0.08867 12/24/1996 12/26/1996 12/26/1996 16.76
12/27/1996 Long Term Gain 0.00914 12/24/1996 12/26/1996 12/26/1996 16.76
12/27/1996 Short Term Gain 0.00725 12/24/1996 12/26/1996 12/26/1996 16.76
11/27/1996 Dividend 0.09845 11/25/1996 11/26/1996 11/26/1996 16.91
10/25/1996 Dividend 0.07268 10/23/1996 10/24/1996 10/24/1996 16.66
9/27/1996 Dividend 0.07588 9/25/1996 9/26/1996 9/26/1996 16.67
8/30/1996 Dividend 0.07855 8/28/1996 8/29/1996 8/29/1996 16.57
7/26/1996 Dividend 0.07895 7/24/1996 7/25/1996 7/25/1996 16.60
6/28/1996 Dividend 0.07661 6/26/1996 6/27/1996 6/27/1996 16.48
5/31/1996 Dividend 0.07709 5/29/1996 5/30/1996 5/30/1996 16.57
4/26/1996 Dividend 0.07705 4/24/1996 4/25/1996 4/25/1996 16.65
3/29/1996 Dividend 0.08200 3/27/1996 3/28/1996 3/28/1996 16.74
2/23/1996 Dividend 0.07054 2/21/1996 2/22/1996 2/22/1996 17.19
1/26/1996 Dividend 0.07755 1/24/1996 1/25/1996 1/25/1996 17.18
12/29/1995 Dividend 0.07210 12/22/1995 12/26/1995 12/28/1995 17.27
12/29/1995 Long Term Gain 0.09138 12/22/1995 12/26/1995 12/28/1995 17.27
11/30/1995 Dividend 0.06863 11/24/1995 11/27/1995 11/29/1995 17.17
10/27/1995 Dividend 0.07533 10/20/1995 10/23/1995 10/26/1995 16.96
9/29/1995 Dividend 0.07384 9/22/1995 9/25/1995 9/28/1995 16.74
8/25/1995 Dividend 0.07685 8/18/1995 8/21/1995 8/24/1995 16.59
7/28/1995 Dividend 0.07480 7/21/1995 7/24/1995 7/27/1995 16.68
6/30/1995 Dividend 0.07351 6/23/1995 6/26/1995 6/29/1995 16.64
5/26/1995 Dividend 0.07843 5/19/1995 5/22/1995 5/25/1995 16.76
4/28/1995 Dividend 0.07874 4/21/1995 4/24/1995 4/27/1995 16.53
3/31/1995 Dividend 0.08037 3/24/1995 3/27/1995 3/30/1995 16.54
2/24/1995 Dividend 0.07213 2/17/1995 2/21/1995 2/23/1995 16.39
1/27/1995 Dividend 0.08156 1/20/1995 1/23/1995 1/26/1995 15.96
12/30/1994 Dividend 0.07308 12/23/1994 12/27/1994 12/29/1994 15.83
11/25/1994 Dividend 0.07780 11/18/1994 11/21/1994 11/23/1994 15.40
10/28/1994 Dividend 0.08118 10/21/1994 10/24/1994 10/27/1994 15.74
9/30/1994 Dividend 0.07771 9/23/1994 9/26/1994 9/29/1994 15.99
8/26/1994 Dividend 0.07934 8/19/1994 8/22/1994 8/25/1994 16.20
7/29/1994 Dividend 0.07752 7/22/1994 7/25/1994 7/28/1994 16.20
6/24/1994 Dividend 0.07546 6/17/1994 6/20/1994 6/23/1994 16.22
5/27/1994 Dividend 0.07844 5/20/1994 5/23/1994 5/26/1994 16.25
4/29/1994 Dividend 0.07223 4/22/1994 4/25/1994 4/28/1994 16.21
3/25/1994 Dividend 0.07915 3/18/1994 3/21/1994 3/24/1994 16.55
2/25/1994 Dividend 0.07305 2/18/1994 2/22/1994 2/24/1994 16.84
1/28/1994 Dividend 0.07878 1/21/1994 1/24/1994 1/27/1994 17.21
12/31/1993 Dividend 0.07734 12/23/1993 12/27/1993 12/30/1993 17.12
12/31/1993 Long Term Gain 0.00199 12/23/1993 12/27/1993 12/30/1993 17.12
11/26/1993 Dividend 0.07677 11/19/1993 11/22/1993 11/24/1993 16.93
10/29/1993 Dividend 0.07914 10/22/1993 10/25/1993 10/28/1993 17.14
9/24/1993 Dividend 0.07723 9/17/1993 9/20/1993 9/23/1993 17.10
8/27/1993 Dividend 0.08094 8/20/1993 8/23/1993 8/26/1993 17.01
7/30/1993 Dividend 0.07689 7/23/1993 7/26/1993 7/29/1993 16.77
6/25/1993 Dividend 0.07999 6/18/1993 6/21/1993 6/24/1993 16.79
5/28/1993 Dividend 0.08139 5/21/1993 5/24/1993 5/27/1993 16.66
4/30/1993 Dividend 0.07337 4/23/1993 4/26/1993 4/29/1993 16.63
3/26/1993 Dividend 0.07737 3/19/1993 3/22/1993 3/25/1993 16.61
2/26/1993 Dividend 0.07263 2/19/1993 2/22/1993 2/25/1993 16.78
1/29/1993 Dividend 0.08480 1/22/1993 1/25/1993 1/28/1993 16.37
12/24/1992 Dividend 0.08225 12/18/1992 12/21/1992 12/23/1992 16.28
11/27/1992 Dividend 0.07826 11/20/1992 11/23/1992 11/25/1992 16.25
10/30/1992 Dividend 0.08093 10/23/1992 10/26/1992 10/29/1992 15.93
9/25/1992 Dividend 0.07835 9/18/1992 9/21/1992 9/24/1992 16.24
8/28/1992 Dividend 0.08758 8/21/1992 8/24/1992 8/27/1992 16.28
7/31/1992 Dividend 0.07736 7/24/1992 7/27/1992 7/30/1992 16.63
6/26/1992 Dividend 0.08027 6/19/1992 6/22/1992 6/25/1992 16.19
5/29/1992 Dividend 0.08292 5/22/1992 5/26/1992 5/28/1992 15.99
4/24/1992 Dividend 0.08002 4/16/1992 4/20/1992 4/23/1992 15.89
3/27/1992 Dividend 0.08046 3/20/1992 3/23/1992 3/26/1992 15.81
2/28/1992 Dividend 0.07999 2/21/1992 2/24/1992 2/27/1992 15.86
1/31/1992 Dividend 0.08550 1/24/1992 1/27/1992 1/30/1992 15.97
12/27/1991 Dividend 0.09209 12/20/1991 12/23/1991 12/26/1991 16.01
11/29/1991 Dividend 0.08320 11/22/1991 11/25/1991 11/27/1991 15.82
10/25/1991 Dividend 0.08729 10/18/1991 10/21/1991 10/24/1991 15.84
9/27/1991 Dividend 0.07785 9/20/1991 9/23/1991 9/26/1991 15.83
8/30/1991 Dividend 0.08372 8/23/1991 8/26/1991 8/29/1991 15.77
7/26/1991 Dividend 0.07658 7/19/1991 7/22/1991 7/25/1991 15.61
6/28/1991 Dividend 0.07902 6/21/1991 6/24/1991 6/27/1991 15.44
5/31/1991 Dividend 0.08745 5/24/1991 5/28/1991 5/30/1991 15.73
4/26/1991 Dividend 0.08092 4/19/1991 4/22/1991 4/25/1991 15.58
3/28/1991 Dividend 0.08922 3/22/1991 3/25/1991 3/27/1991 15.42
2/22/1991 Dividend 0.06827 2/15/1991 2/19/1991 2/21/1991 15.54
1/25/1991 Dividend 0.08301 1/18/1991 1/21/1991 1/24/1991 15.44
12/28/1990 Dividend 0.09306 12/21/1990 12/24/1990 12/27/1990 15.33
11/30/1990 Dividend 0.07727 11/23/1990 11/26/1990 11/29/1990 15.40
10/26/1990 Dividend 0.08547 10/19/1990 10/22/1990 10/25/1990 15.12
9/28/1990 Dividend 0.08072 9/21/1990 9/24/1990 9/27/1990 14.88
8/31/1990 Dividend 0.08375 8/24/1990 8/27/1990 8/30/1990 14.99
7/27/1990 Dividend 0.07939 7/20/1990 7/23/1990 7/26/1990 15.47
6/29/1990 Dividend 0.08166 6/22/1990 6/25/1990 6/28/1990 15.28
5/25/1990 Dividend 0.07724 5/18/1990 5/21/1990 5/24/1990 15.24
4/27/1990 Dividend 0.08595 4/20/1990 4/23/1990 4/26/1990 14.83
3/30/1990 Dividend 0.08337 3/23/1990 3/26/1990 3/29/1990 15.19
2/23/1990 Dividend 0.07488 2/16/1990 2/20/1990 2/22/1990 15.28
1/26/1990 Dividend 0.08833 1/19/1990 1/22/1990 1/25/1990 15.18
12/29/1989 Dividend 0.08402 12/22/1989 12/26/1989 12/28/1989 15.61
11/24/1989 Dividend 0.07740 11/17/1989 11/20/1989 11/22/1989 15.55
10/27/1989 Dividend 0.08556 10/20/1989 10/23/1989 10/26/1989 15.35
9/29/1989 Dividend 0.08210 9/22/1989 9/25/1989 9/28/1989 15.16
8/30/1989 Dividend 0.08741 8/22/1989 8/23/1989 8/29/1989 15.34
7/28/1989 Dividend 0.08815 7/21/1989 7/24/1989 7/27/1989 15.67
6/30/1989 Dividend 0.08132 6/23/1989 6/26/1989 6/29/1989 15.62
5/26/1989 Dividend 0.08688 5/19/1989 5/22/1989 5/25/1989 15.42
4/28/1989 Dividend 0.08301 4/21/1989 4/24/1989 4/27/1989 15.29
3/31/1989 Dividend 0.08361 3/23/1989 3/27/1989 3/30/1989 15.03
2/24/1989 Dividend 0.08428 2/17/1989 2/21/1989 2/23/1989 15.11
1/27/1989 Dividend 0.08021 1/20/1989 1/23/1989 1/26/1989 15.38
12/30/1988 Dividend 0.07460 12/23/1988 12/27/1988 12/29/1988 15.19
11/25/1988 Dividend 0.08644 11/18/1988 11/21/1988 11/23/1988 15.02
10/28/1988 Dividend 0.08375 10/21/1988 10/24/1988 10/27/1988 15.22
9/30/1988 Dividend 0.07859 9/23/1988 9/26/1988 9/29/1988 15.04
8/26/1988 Dividend 0.09034 8/19/1988 8/22/1988 8/25/1988 14.85
7/29/1988 Dividend 0.08926 7/22/1988 7/25/1988 7/28/1988 14.96
6/24/1988 Dividend 0.08111 6/17/1988 6/20/1988 6/23/1988 14.91
5/27/1988 Dividend 0.08636 5/20/1988 5/23/1988 5/26/1988 14.77
4/29/1988 Dividend 0.08070 4/21/1988 4/22/1988 4/28/1988 14.92
3/30/1988 Dividend 0.12306 3/23/1988 3/24/1988 3/29/1988 14.82
2/26/1988 Short Term Gain 0.08902 2/19/1988 2/22/1988 2/25/1988 15.38
1/29/1988 Dividend 0.05779 1/21/1988 1/22/1988 1/28/1988 15.34
12/24/1987 Short Term Gain 0.12764 12/18/1987 12/21/1987 12/23/1987 14.55
11/27/1987 Dividend 0.08178 11/19/1987 11/20/1987 11/25/1987 14.68
10/29/1987 Dividend 0.13520 10/22/1987 10/23/1987 10/28/1987 14.27
12/29/1986 Long Term Gain 0.04569 12/22/1986 12/23/1986 12/26/1986 16.36
12/29/1986 Short Term Gain 0.82131 12/22/1986 12/23/1986 12/26/1986 16.36
12/24/1985 Short Term Gain 0.26700 12/17/1985 12/18/1985 12/23/1985 15.76

Annual Distribution Totals

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A Shares: Without Sales Charge

Annual Capital Gains Totals Annual Capital Gains Totals

A Shares: Without Sales Charge

Holdings

Sector Weights as of 3/31/2013

Fund
GO Bond 29.30% 27.19%
Revenue Bond 41.85% 66.70%
Prefunded Bond 7.09% 5.85%
Insured Bond 25.43% 0.27%
Other Revenue 5.47% -
Cash/Hedges -9.14% -
TOTAL 100.00% 100.01%
Source: Calvert Investment Management, Inc.

Top 10 Holdings

Top 10 Equity Holdings

The top 10 companies in which the portfolio invests, measured by a percentage of total investments.

As of 3/31/2013
Average Effective Maturity 13.85 Years

Credit Quality

Important Disclosure

* Negative Cash positions may occur as the result of varying settlement schedules for securities.

Holdings are subject to change.

Industry classifications provided by MSCI. MSCI makes no express or implied warranties or representations and shall have no liability whatsoever with respect to any MSCI data contained herein. The MSCI data may not be further redistributed or used as a basis for other indices or any securities or financial products. This report is not approved, reviewed or produced by MSCI.

Ratings are determined by using S&P, Moody's and Fitch rating services, whose rating categories are reflected above respectively. The letter ratings generally range from AAA (judged to be of the highest quality, with minimal credit risk) to D (the lowest rated class of bonds, typically in default with respect to timely payment of principal or interest). Bonds rated by all three services are assigned the median rating; if a bond is rated by only two agencies, it is assigned the lowest rating; if it is only rated by one agency, it is assigned that rating. Government securities may be rated lower than AAA/Aaa/AAA or may not be rated, and may include foreign government securities. If a bond is not rated by any of the aforementioned rating services, it appears in the "Not Rated" category. Ratings are subject to change.

Management & Commentary

Fund Management

Calvert Investment Management, Inc.

As investment advisor to the Calvert family of funds, Calvert Investment Management, Inc. oversees assets covering a broad range of equity, fixed-income, balanced, and asset allocation funds.

Thomas A. Dailey,
Vice President and Portfolio Manager

Fees & Minimums

Annual Operating Expenses (deducted from Fund assets)

Description Expense
Management fees 0.640%
Distribution and service (12b-1) fees 0.090%
Other expenses 0.170%
Total annual Fund operating expenses 0.900%

Shareholder Fees (fees paid directly from your account)

Description Fee
Maximum sales charge (load) imposed on purchases
(as a percentage of offering price)		 3.75%
Maximum deferred sales charge (load)
(as a percentage of purchase or redemption
proceeds, whichever is lower) 		none
Redemption Fee
(unless otherwise noted in the prospectus the redemption fee applies to redemptions, including exchanges within 30 days of purchase (seven days for Class I and R shares)		 2.00%

Fund Expense Ratios

Description Expense
Expense Ratio
(if no waiver/reimbursement
in effect)		 0.90%
Net Expense Ratio
(if waiver/reimbursement
in effect)		 n/a
Gross Expense Ratio
(if waiver/reimbursement
in effect)		 n/a

Investment Minimums

Description Minimum
Minimum Initial Investment (ClassA) $2,000
Minimum Subsequent Investment (ClassA) $250

Important Disclosure

Management fees include the advisory fee paid by the Fund to the Advisor, and the administrative fee paid by the Fund to Calvert Investment Administrative Services, Inc., an affiliate of the Advisor.

Fund literature and resources
Morningstar Category™

Muni National Long

Risk/Return Assessment

Risk/Return Assessment

Demonstrates where the Fund falls on a risk/return spectrum, relative to other Calvert Funds. Funds with more conservative objectives and strategies would fall on the left side of the spectrum, while funds with more aggressive objectives and strategies would appear on the right.

Compared against all Calvert Funds