497 1 form.htm
Federated Real Return Bond Fund
A Portfolio of Federated Income Securities Trust
CLASS A SHARES (TICKER RRFAX)
CLASS C SHARES (TICKER RRFCX)
INSTITUTIONAL SHARES (TICKER RRFIX)

SUPPLEMENT TO SUMMARY PROSPECTUS DATED may 31, 2013
Under the heading entitled “ Fund Management,” please delete the information regarding Donald T. Ellenberger and replace it with the following:
“J. Andrew Kirschler, Portfolio Manager, has been the Fund's portfolio manager since July 2013.”
July 5, 2013
Federated Real Return Bond Fund
Federated Investors Funds
4000 Ericsson Drive
Warrendale, PA 15086-7561
Contact us at FederatedInvestors.com
or call 1-800-341-7400.
Federated Securities Corp., Distributor
Q451807 (7/13)
Federated Real Return Bond Fund
A Portfolio of Federated Income Securities Trust
CLASS A SHARES (TICKER RRFAX)
CLASS C SHARES (TICKER RRFCX)
INSTITUTIONAL SHARES (TICKER RRFIX)

SUPPLEMENT TO PROSPECTUS DATED may 31, 2013
1. Under the heading entitled “Fund Management,” please delete the information regarding Donald T. Ellenberger and replace it with the following:
“J. Andrew Kirschler, Portfolio Manager, has been the Fund's portfolio manager since July 2013.”
2. Under the heading entitled “Portfolio Management Information,” please delete the biography of Donald T. Ellenberger and replace it with the following:
“J. Andrew Kirschler
J. Andrew Kirschler has been the Fund's Portfolio Manager since July 2013, responsible for the day to day management focusing on asset allocation and government securities. Mr. Kirschler joined Federated in 1990 in the Internal Sales department. In 1994 he was an Assistant Trader, in 1996 a Trader and in 2003 a Senior Trader on the fixed income desk concentrating on government securities. Mr. Kirschler became a Senior Investment Analyst in 2013. In 2000 he was appointed Asst. Vice President and in 2003 appointed Vice President of a Federated advisory subsidiary. Mr. Kirschler received his M.B.A from the University of Pittsburgh.”
July 5, 2013
Federated Real Return Bond Fund
Federated Investors Funds
4000 Ericsson Drive
Warrendale, PA 15086-7561
Contact us at FederatedInvestors.com
or call 1-800-341-7400.
Federated Securities Corp., Distributor
Q451805 (7/13)
Federated Real Return Bond Fund
A Portfolio of Federated Income Securities Trust
CLASS A SHARES (TICKER RRFAX)
CLASS C SHARES (TICKER RRFCX)
INSTITUTIONAL SHARES (TICKER RRFIX)

SUPPLEMENT TO statement of additional information DATED may 31, 2013
Please remove all references to Donald T. Ellenberger as a portfolio manager of the Fund.
1. Under the heading entitled “ Portfolio Manager Information,” please delete the information regarding Donald T. Ellenberger and replace it with the following:
“Andrew Kirschler, Portfolio Manager
Types of Accounts Managed
by Andrew Kirschler
Total Number of Additional Accounts
Managed/Total Assets*
Registered Investment Companies 0/$0
Other Pooled Investment Vehicles 0/$0
Other Accounts 0/$0
*
None of the Accounts has an advisory fee that is based on the performance of the account.
Dollar value range of shares owned in the Fund: None.
Andrew Kirschler is paid a fixed base salary and a variable annual incentive. Base salary is determined within a market competitive position-specific salary range, based on the portfolio manager's experience and performance. The annual incentive amount is determined based primarily on Investment Product Performance (IPP) and, to a lesser extent, Financial Success, and may be paid entirely in cash, or in a combination of cash and restricted stock of Federated Investors, Inc. (“Federated”). The total combined annual incentive opportunity is intended to be competitive in the market for this portfolio manager role.
IPP is measured on a rolling one, three and five calendar year pre-tax gross total return basis vs. the Fund's benchmark (i.e., Barclays Treasury Inflation Protected Securities Index) and vs. the Fund's designated peer group of comparable accounts. Performance periods are adjusted if a portfolio manager has been managing an account for less than five years; accounts with less than one year of performance history under a portfolio manager may be excluded. As noted above, Mr. Kirschler is also the portfolio manager for other accounts in addition to the Fund. Such other accounts may have different benchmarks and performance measures. For purposes of calculating the annual incentive amount, each fund or account managed by the portfolio manager is categorized into one of three IPP groups. Within each performance measurement period and IPP group, IPP is calculated on the basis of an assigned weighting to each account or fund managed by the portfolio manager and included in the IPP groups. The weighting assigned to the Fund is greater than or equal to the weighting assigned to other accounts or funds used to determine IPP. In addition, Mr. Kirschler serves on one or more Investment Teams that establish guidelines on various performance drivers (e.g., currency, duration, sector, volatility and/or yield curve) for taxable fixed income funds. A portion of the IPP score is based on Federated's senior management's assessment of team contributions. A portion of the bonus tied to the IPP score may be adjusted based on management's assessment of overall contributions to Fund performance and any other factors as deemed relevant.
The Financial Success category is designed to tie the portfolio manager's bonus, in part, to Federated's overall financial results. Funding for the Financial Success category may be determined on a product or asset class basis, as well as on corporate financial results. Senior Management determines individual Financial Success bonuses on a discretionary basis, considering overall contributions and any other factors deemed relevant.
In addition, Andrew Kirschler was awarded a grant of restricted Federated stock. Awards of restricted stock are discretionary and are made in variable amounts based on the subjective judgment of Federated's senior management.”
July 5, 2013

Federated Real Return Bond Fund
Federated Investors Funds
4000 Ericsson Drive
Warrendale, PA 15086-7561
Contact us at FederatedInvestors.com
or call 1-800-341-7400.
Federated Securities Corp., Distributor
Q451806 (7/13)