Anyone who buys stamps can expect to pay slightly more for them from the beginning of next month, which is only a few days away.
From April 3, the price of first and second-class Royal Mail stamps will rise by up to 16 percent - the most they've ever jumped up in price.
It's also the first time that a first-class stamp will break the £1 barrier, going from 95p to £1.10. Second-class stamps will also increase from 68p to 75p, which is an increase of just over 10 percent.
This means that there are only seven days left until the new prices come in, giving shoppers some time to stock up while they still cost a lower amount.
Royal Mail has said that the reason for the price surge is because of "careful consideration" of different factors.
Some of these include overall rising costs, a 25 percent drop in letter-sending in the aftermath of the pandemic, and an "ever-growing" number of addresses.
The company also said the price rise was vital in order to keep its Universal Service agreement sustainable, in which it pledges to deliver mail to anywhere in the country for the same price.
This price hike is set to come into force the day before the new King Charles stamps with his silhouette are available to purchase by the general public.
The new series of stamps features a collection of photographs of different flowers against white background, with the King's silhouette in the corner.
This is the first time stamp silhouettes have been changed since 1968, as the King isn't depicted wearing a laurel wreath like the late Queen Elizabeth was.
The flowers are a nod to the King's love of gardening, and the collection features some of the UK's most popular flowers, including roses, tulips and sweet peas.
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