Van Kampen Senior Income Trust Announces Refinancing of Auction-Rate Preferred Securities

April 15, 2008

CHICAGO, April 15, 2008 – Van Kampen Senior Income Trust (NYSE: VVR) has announced its intention to redeem a portion of its auction-rate preferred securities (ARPS). The Board of Trustees has approved refinancing the Trust’s leverage through its existing credit line, which will provide liquidity at par for the holders of a portion of the Trust’s ARPS.

The Trust will be redeeming approximately $350 million of the $700 million ARPS outstanding (approximately 50%) on a pro rata basis by series. The Depository Trust Company (DTC), the securities’ holder of record, will determine how partial series redemptions will be allocated among each participant broker-dealer account.

Each participant broker-dealer, as nominee for underlying beneficial owners (street name shareholders), in turn will determine how redeemed shares are to be allocated among its underlying beneficial owners. The procedures used by different broker-dealers to allocate redeemed shares among beneficial owners may differ from each other as well as from the procedures used by DTC.

The Trust is expected to issue a redemption notice within the next several days. The Trust anticipates that the redemption and refinancing for the ARPS will be completed by May 30, 2008.

Van Kampen Asset Management, the Trust's investment adviser, is a wholly owned subsidiary of Van Kampen Investments Inc. (“Van Kampen”). Van Kampen is one of the nation’s largest investment management companies, with approximately $107 billion in assets under management or supervision, as of February 29, 2008. With roots in money management dating back to 1927, Van Kampen has helped nearly four generations of investors achieve their financial goals.