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 August 2015 were:

130.08p  Capital only and including debt at par value
124.44p  Capital only and including debt at fair value
133.03p  Including current year income and debt at par value
127.39p  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 250,000 ordinary shares on 11 August 2015, the Company has 274,437,282 ordinary shares in issue,
          excluding 16,675,000 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 274,437,282 Ordinary Shares in issue.