Net Asset Value(s)

NET ASSET VALUE

BLACKROCK NORTH AMERICAN INCOME TRUST PLC

The unaudited net asset values for BlackRock North American Income Trust plc at
close of business on 15 May 2015 were:

122.33p Capital only
124.13p Including current year income

Notes:

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

2. Following the buyback of 250,000 ordinary shares on 8 May 2015, the Company
has 80,039,044 ordinary shares in issue, excluding 20,322,261 which are held in
treasury.

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