The birds, the bees and the Bank? The birth-rate channel of monetary policy

Fergus Cumming and Lisa Dettling

Children are expensive. Swings in families’ cash-flow can therefore move the dial on families’ decisions on whether and when to have a baby. For mortgaged families with an adjustable interest rate in 2008, the sharp fall in Bank Rate amounted to a windfall of around £1,000 per quarter in lower mortgage payments. In this post we show that people responded to this cash-flow boost by having more children. In total, we estimate that monetary policy increased the birth rate in the following three years by around 7.5%. That’s around 50,000 extra babies.

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