Catherine Clifford reports at CNNMoney.com that eight months after President Obama began prodding the nation’s banks to increase their small business lending, the loan numbers continue to move in the opposite direction.

The 22 banks that got the most help from the Treasury’s bailout programs cut their small business loan balances by a collective $10.5 billion over the past six months, according to a government report released Monday.

Three of the 22 banks make no small business loans at all. Of the remaining 19 banks, 15 have reduced their small business loan balance since April, when the Treasury department began requiring the biggest banks receiving Troubled Asset Relief Program (TARP) funding to report monthly on their small business lending.

Over the six months that the reporting requirement has been in effect, the banks have cut their collective small business lending by 4%. Their cumulative balance stood at $258.7 billion as of Sept. 30, according to a Treasury Department report.

The bank with the biggest lending drop was Wells Fargo (WFC, Fortune 500), which cut its loan balances by $3 billion. However, Wells Fargo also remains by far the biggest small business lender, with $73.8 billion lent out to small companies. No other bank comes close to that tally.

Some banks are unapologetic about their cutbacks. Small business defaults are soaring, and banks are under pressure to shore up their balance sheets and reduce their exposure to risky loans. Two key small business lenders, CIT Group and Advanta, filed for bankruptcy this month.

But other banks downplay their dwindling loan numbers.

JPMorgan Chase (JPM, Fortune 500) made headlines last week by announcing that it would increase its small business lending by $4 billion this year. But there’s no sign of an increase so far in the reports the bank has been filing to the Treasury. JPMorgan’s small business lending total has declined every month since April, falling 2.5% over the period. As of Sept. 30, the balance stood at $25.4 billion, down $664 million from six months ago.

JPMorgan spokesman Tom Kelly said the bank will ramp up its lending as the economy improves. The bank is already starting to see healthier, better-qualified applicants, he said: “Some of the businesses are better than they were six months ago.”

He also pointed to JPMorgan’s recent move to hire additional small business specialists. “We are going to have 325 more bankers talking to customers, so that means there is going to be more applicants for loans,” Kelly said. “We have 325 more people knocking on doors.”

Credit crunch: Obama administration officials, including Treasury Secretary Tim Geithner and Small Business Administration head Karen Mills, will host a forum Wednesday in Washington to discuss the lending challenges small businesses face. Bankers, members of Congress, and a selection of small business owners will participate.

While credit conditions have improved in some parts of the financial system, lending remains very tight for businesses that rely on banks for their financing, Federal Reserve Chairman Ben Bernanke acknowledged on Monday.

“Many small businesses have seen their bank credit lines reduced or eliminated, or they have been able to obtain credit only on significantly more restrictive terms,” Bernanke said in a speech at the Economic Club of New York. “The fraction of small businesses reporting difficulty in obtaining credit is near a record high, and many of these businesses expect credit conditions to tighten further.”