The average interest rate on the issue of domestic federal debt rose to 12.44% in February from 12.23% in January.
The Treasury stressed in a statement that the intermediate and long parts of the yield curve steepened "due to the continued uncertainty environment in the external market," amid increased expectations of a stricter monetary policy in the U.S. following strong activity data.
The Treasury's liquidity reserve, which allows the government to have flexibility in debt management amid market volatility, rose 4.43% in February from the month before, to 995.66 billion reais, enough to pay 6.87 months ahead of maturities.
($1 = 5.1396 reais)
(Reporting by Marcela Ayres
Editing by Chris Reese and Aurora Ellis)