text: Hungary o / n rates end up before Dec 10 tax payment . BUDAPEST 1996-12-06 Hungarian overnight interest rates closed higher on Friday as market liquidity tightened before the December 10 social security contribution payment deadline , dealers said . " The banks are already preparing for the December 10 tax payment , " said Budapest Bank 's Sandor Tolonics . " They expect a larger-than-average payment . " The overnight market opened at 22.00 / 22.75 percent , then substantial money was taken up at 22.5 percent . But later , rates dropped and closed at 22.00 / 22.25 as a large bank finished borrowing money . On Thursday , overnight rates moved between 21.625 and 22.125 . Dealers said liquidity could tighten further early next week as the social security contribution payments date approaches . -- Sandor Peto , Budapest newsroom ( 36 1 ) 327 4040