Mayor Stephanie Rawlings-Blake announced her tax credit recompense program, which will provide relief to taxpayers who received inaccurate information from the State Department of Assessments. (Kevin Richardson/Baltimore Sun video)

Mayor Stephanie Rawlings-Blake said Monday that the city will make lump-sum payments to owners of historic properties whose tax bills in coming years will be higher than what government officials told them to expect.

The checks — which will cover portions of up to nine years of future tax bills — are intended to compensate property owners who were awarded excessive 10-year credits for renovation or restoration of historic buildings. The city intends to cover the mistakes with a single check now. Officials expect about $3 million to be distributed to an estimated 300 property owners.

"These are families who were told their tax bills would be one thing, and now they're finding out they're expected to pay thousands more," Rawlings-Blake said. "During these tough economic times for families, this is particularly harsh and unfair."

Some officials applauded the move, though City Councilman Carl Stokes questioned the wisdom of covering future bills now.

"We should not do lump-sum payments," he said. "I definitely don't think we should be paying money for someone who may take the money and move."

Stokes said the city needs to correct chronic problems with many of its billing offices. "The best solution is to get our act together," he said. "Unfortunately, for three years, we've been saying to the council and the citizens that we're going to fix these billings and we haven't done it yet. We still get too many complaints from people."

The compensation plan, which the mayor calls the city's Tax Recompense Program, is the latest step by the city to make right chronic miscalculations in the state's historic property tax program.

The Baltimore Sun has detailed problems with the historic tax credit program, in which the full value of approved home renovations goes untaxed by the city for 10 years. In 2012, The Sun found the city did not collect more than $1.5 million in taxes because of historic tax credit errors on some apartment buildings and commercial properties.

And in July, about 315 city homeowners saw significant increases in their property tax bills after officials discovered that previous tax breaks were larger than they should have been. City and state officials have been trading blame over who bears responsibility for the errors.

Some had encouraged the mayor to just issue tax bills in the amounts people were promised, but that turned out to be against the law, officials said. Once the mistakes were found, the bills must be issued correctly.

But the compensation program is complicated because the money sent by the city must be treated as income — and therefore must be taxed.

"It doesn't make folks 100 percent whole, but I think it's as close as we can get," said City Councilman James B. Kraft, who advocated for the payments. "If people take the money and sit it on the side, and use it to supplement their payment, then they're going to be pretty close to 100 percent whole. If they take it and go out and buy a 52-inch television, then it's not going to solve their problems."

As part of the program — funding for which requires City Council approval — officials also plan to issue refunds to historic-property owners who can show they were overbilled during the past three years because of miscalculations.

Whether seeking a refund for past years or an offset for future tax bills, owners will need to apply for a check and provide state documentation to support their claim.

Rawlings-Blake said if the property owners lack the documentation, the city will file public information requests with the state Department of Assessments and Taxation, which until recently handled tax calculations for the city.

City Council President Bernard C. "Jack" Young is supportive of the plan, according to his spokesman, Lester Davis.

"It seems like a no-brainer," Davis said. "He has called for the city to hold people harmless."

In the current fiscal year, more than 1,250 taxpayers are receiving historic tax credits.

The payments from the city could be sizable for some affected property owners. The owners of a Little Italy condo, for example, could be in line for $40,000 — the amount they were banking on saving over the remaining three years of a 10-year credit. The credit was a key factor in the decision to buy the condo in late 2012, said co-owner Mark Struble.

Sharon Slevin, a realtor with Prudential Homesale YWGC Realty who has sold several houses that had a historic credit in place, called the mayor's plan a "reasonable compromise."