Almost 400,000 Britons paid CGT within the 2021/22 tax yr, twice as many as 10 years in the past, with the full invoice hitting £16.7billion. AJ Bell head of funding evaluation Laith Khalaf warned the numbers are set to "explode" once more as Chancellor Jeremy Hunt cuts the annual exempt quantity.

This is the quantity of capital good points any particular person could make every monetary yr earlier than they set off a tax invoice.

It was slashed from £12,300 a yr to simply £6,000 from April 6 this yr and can fall once more to simply £3,000 from April 6, 2024.

We now pay greater than twice as a lot CGT as inheritance tax, the place the annual invoice has simply topped £7billion.

CGT is charged on earnings when promoting belongings reminiscent of a second house or funding property, a enterprise, antiques, jewelry, cryptocurrency or shares and funding funds held outdoors the tax-free Isa wrapper.

Basic price taxpayers pay CGT at 10 p.c which rises to 18 p.c on property gross sales, whereas larger price taxpayers pay CGT at 20 p.c or 28 p.c when promoting property. There is nothing to pay when promoting your important house.

Things might get even worse if labour takes energy amid ideas that it might align CGT tax bands with earnings tax, making them much more punitive.

CGT is seen as a wealthy particular person’s tax however the internet is being forged quite a bit wider than that as of late, Khalaf stated. “Investors with a relatively small amount of shares or investment funds held outside of an Isa may now find themselves caught in a CGT trap." 

They may still escape HMRC's clutches by planning carefully and only taking a small amount of gains each year, to keep inside the annual exempt amount. 

Now could be a particularly good year to do that before it is cut to £3,000 from April 6 2024.

Khalaf said many investors sell their shares then buy them back again inside a tax-free Isa, a process known as Bed & Isa. 

Married couples and civil partners can transfer assets between each other free of CGT, allowing them to use both their exemptions. Investors can also offset any investment losses in their portfolio against gains.

Business owners now pay more CGT as the lifetime limit for Business Asset Disposal Relief has been slashed from £10million to £1million.

HMRC’s bumper CGT take has been further boosted by the growing number of landlords selling up, said Rachael Griffin, tax and financial planning expert at Quilter. “There is an exodus of landlords as tighter tax laws make buy-to-let a less attractive investment”.

In the 2022/23 tax yr, 139,000 folks reported 151,000 property gross sales with a complete tax legal responsibility of £1.8billion. That’s a median invoice of £11,920 per house.

The landlord exodus might speed up as larger borrowing prices eat into their property margins, whereas many need to get out forward of a possible home worth crash.

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Landlords benefit from the annual exempt amount and can also offset their initial purchase costs against the final bill. Estate agent and solicitor fees, stamp duty when the property was purchased, and surveying and valuation costs can all be deducted.

They can also claim for any costs linked to improvement work, such as a garage, conservatory or extension, or upgrading kitchens and bathrooms. In all cases, they must keep receipts.

Like-for-like replacements of existing fixtures and fittings do not qualify, nor does upkeep such as repairing a broken window or roof tiles.

Under Private Residence Relief (PRR) rules, landlords can also claim CGT relief for any years that the property was their main residence.

Others choose invest in buy-to-let via a limited company as this means they pay corporation tax on profits instead of CGT, which starts at a lower rate 19 percent on profits up to £50,000.

While the rich still pay most CGT, with less than one percent contributing 45 percent of all receipts, many taxpayers who would never consider themselves particularly wealthy are now in the firing line, too. 

So be sure you don’t neglect about CGT. HMRC definitely gained’t.