The Mt. Airy Business Improvement District approved its 2012-2013 budget at its annual meeting Thursday.

The budget, which was approved unanimously by the board, forecasts over $158,000 in revenue against $150,000 in expenses for the fiscal year beginning October 1. This projection should allow the board to grow its current surplus of over $4,000 to approximately $13,500 at the end of 2013, according to board chair Ken Weinstein.

“This is a somewhat conservative budget,” he said. “This should allow for us to have even more of a surplus.”

Of the $150,000 in expected expenses, $14,850 of that money will be spent on programming, including holiday decorations and Labor Day planting. Street cleaning is expected to cost just over $6,000.

The $158,000 in revenue is expected to come from a combination of donations, grant money and funds from business owners.