The Fabian Society is calling for Chancellor Rishi Sunak to permanently extend the top-ups – which were introduced last Spring – or risk hitting "family finances in every corner of the country".
The think-tank's analysis of the latest figures show there were 11,538 households in Aberdeenshire receiving Universal Credit in November last year, and around 2,300 claiming Working Tax Credit in December.
This means a potential 13,838 households in the area would see their finances hit by the scrapping of the £20 uplifts – and more than two-fifths have children.
Both benefits were temporarily increased for one year – worth £1,000 per claimant over this time – as the coronavirus pandemic took hold in April last year.
The weekly top-up is set to end after March 31, but it is hoped the Chancellor will announce a change of plan at the Budget this Wednesday, March 3 .
Andrew Harrop, Fabian Society general secretary, said: “These devastating figures show how the chancellor’s planned cut to Universal Credit and Working Tax Credit will hit family finances.
“Removing £1,000 per year from so many households will reduce how much people can spend and suck millions of pounds out of local economies.”
In Aberdeenshire, £14.1 million in social security income would be lost.