Net Asset Value(s)

NET ASSET VALUE

BLACKROCK INCOME STRATEGIES TRUST PLC

The unaudited net asset values for BlackRock Income Strategies Trust plc at close of business on 24 July 2015 were:

140.80p  Capital only and including debt at par value
135.78p  Capital only and including debt at fair value
143.68p  Including current year income and debt at par value
138.67p  Including current year income and debt at fair value

Notes:

1.        Investments have been valued on a bid price basis.

2.       Following the buyback of 650,000 ordinary shares on 24 July 2015, the Company has 276,437,282 ordinary shares in issue,
          excluding 14,675,000 which are held in treasury.

3.        Revenue items included in net asset value, with dividends payable deducted on the ex-dividend date.

4.        The unaudited NAV above has been calculated on the basis of 276,437,282 Ordinary Shares in issue.