Net Asset Value(s)

NET ASSET VALUE

BLACKROCK NORTH AMERICAN INCOME TRUST PLC

Following developments in the US overnight and the closure of financial
exchanges due to Hurricane Sandy, the US equity exchanges were closed on 30
October 2012. Given that there are no official prices for many US traded
securities, today's NAV has been calculated using the closing bid market prices
of US listed securities on Friday, 26 October 2012.

The unaudited net asset values for BlackRock North American Income Trust plc at
close of business on 30 October 2012 were:

98.50p Capital only
98.64p Including current year income

Notes:
1. Investments have been valued on a bid price basis.
2. Revenue items included in net asset value, with dividends payable deducted
on the ex-dividend date.
3. The unaudited NAV above has been calculated based on 65,000,000 ordinary
shares in issue.