The increase in average O/N deposit stock indicates a rise in forint liquidity of the banking sector, MNB said.
MNB launched daily tenders for fixed-rate O/N deposits, at a rate of 18%, well over the 13% base rate, in mid-October.
The average stock of bonds issued by MNB fell by HUF 612 bln to HUF 89 bln in January.
The average stock of variable-rate deposits rose by HUF 62 bln to HUF 2.197 tln.
The January data show banks' had HUF 2.45 tln on their reserve accounts during the month, down from HUF 2.801 tln in December.
Currency in circulation fell by HUF 197 bln to HUF 8.215 tln in January, consistent with start-of-year seasonality, MNB said.