In London and the South East 86% should benefit, while a high proportion of buyers in the South West (81%) and the East of England (81%) will also be helped out by the changes.
In the capital the average buyer will be £2,175 better off, with Carshalton and Wallington benefitting the most and Kensington buyers being helped the least.
Homeowners looking to buy for just above £250,000 could save around £5,000 from the changes.
Only those paying between £937,500 and £1,000,000 will pay more tax, although 7% of buyers in London fit into this category.
