In September 2008, the UK government announced a surprise stimulus policy in response to a dramatic fall in the housing market: a property transaction tax on houses sold in a certain price range was temporarily eliminated. This column reports research showing that this stimulus boosted transaction volumes by 20% and increased consumer spending by an amount equal to the forgone tax revenue. Cutting transaction taxes during economic downturns can thus be an effective way to stimulate both the housing market and the broader economy.