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 22 June 2015 were:

141.72p   Capital Only: Debt at par
137.40p   Capital Only: Debt at Fair Value
143.90p   Including current year revenue: Debt at par XD
139.58p   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 175,000 ordinary shares on 19 June 2015, the
Company has 286,837,282 ordinary shares in issue, excluding 4,275,000 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 287,012,282
Ordinary Shares in issue.