The last price increase was two years ago, when first-class stamps jumped to 60p from 46p
The price of a first-class stamp is to increase by 2p to 62p while a second-class stamp will go up 3p to 53p, Royal Mail has announced.
Also from 31 March, a large letter first-class stamp up to 100g will rise by 3p to 93p and a large letter second-class stamp will increase by 4p to 73p.
Two years ago the cost of a first-class stamp jumped from 46p to 60p.
Royal Mail said that under the current regulatory framework, it could have increased second-class stamps by 7p, instead of the 3p it chose to.