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 19 August 2015 were:

139.90p  Capital only and including debt at par value
134.63p  Capital only and including debt at fair value
142.71p  Including current year income and debt at par value
137.45p  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.