Net Asset Value(s)

NET ASSET VALUE

BLACKROCK INCOME STRATEGIES TRUST PLC

The unaudited net asset values for the ordinary shares of BlackRock Income
Strategies Trust plc at close of business on 18 June 2015 were:

140.10p   Capital Only: Debt at par
135.63p   Capital Only: Debt at Fair Value
142.23p   Including current year revenue: Debt at par XD
137.75p   Including current year revenue: Debt at Fair Value XD

Notes:

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

2. Following the buyback of 1,000,000 ordinary shares on 16 June 2015,
the Company has 287,412,282 ordinary shares in issue, excluding 3,700,000
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
287,412,282 Ordinary Shares in issue.