Selling your home is, for most people, the biggest deal of their life, and the tax on the gain can easily run to hundreds of thousands of kronor. The good news is that the rules are understandable, that you can deduct more than you think, and that you can almost always defer the tax if you buy a new home. The hard part is not the maths, it is remembering the deductions.
The gain is the sale price minus what you paid, minus the estate-agent fee, minus your improvement costs. On that gain you pay 22 percent tax. If you buy a new home you can claim uppskov and defer the tax, and since 2021 the deferral is interest-free, so it costs nothing to keep. Gather every receipt for renovations; that is where most people pay more tax than they need to.
I will cover how the gain is worked out, which deductions actually apply, how the deferral works and when it pays off, and how to offset a loss. Run your own case in the property capital gains calculator as you read.
How the gain is worked out
The gain is not the same thing as the price rise. You take the sale price, deduct the purchase price, deduct the estate-agent fee and other selling costs, and deduct your improvement costs. What remains is the taxable gain (or loss). A tenant-owner flat also counts capital contributions and your share of the association's amortisation while you owned it. The point: the more you can show you spent, the lower the gain and the tax.
The tax: 22 percent of the gain
On a private residence the gain is taxed at 22%. Technically the gain is quoted to 22/30 and then taxed at 30% capital tax, but the result is 22 percent of the whole gain, a figure worth keeping in your head. If the sale makes a loss, half the loss is deductible, giving you a tax reduction of roughly 15 percent of the loss. The tax lands in your tax return the year after the sale.
Improvement costs you must not forget
This is where the money is. You can deduct basic improvements (new construction, extensions, a new kitchen where there was nothing equivalent before) and improving repairs from the past five years, as long as they raised the standard. Swapping a worn stove for an equivalent one does not count, but turning a kitchenette into a real kitchen does. The condition is that the costs in a single year exceed 5,000 kr. Keep receipts, invoices and before-and-after photos; without documentation the Tax Agency can reject the deduction, and then you pay tax on a gain you did not really make.
Uppskov: defer the whole tax
If you buy a new home to live in you can claim uppskov and defer the capital gains tax instead of paying it now. The cap is 3 000 000 kr per home sold, multiplied by your ownership share, so if you own half the home your cap is half that, and if the new home costs less than the one you sold the deferral is limited proportionally. The key point: since the deferral interest was abolished in 2021 the uppskov is interest-free. It costs nothing to keep, and you hold on to the whole capital and can let it work instead of sending it to the state early. The tax is paid only when you sell the new home, unless you defer again.
Offset the gain against a loss
If you made a loss on something else, for example selling shares or funds at a loss the same year, it can lower the tax on the home gain, but not krona for krona. Both sit in the same income category (capital), yet a loss on listed shares or funds is only fully offset against gains on other listed securities. What is left counts at 70 percent against other capital income, and a home gain is other capital income. So a 100,000 kr share loss reduces the taxable home gain by 70,000 kr and saves you about 21,000 kr in tax. If you have both a property sale and securities to tidy up, look at the whole year before you decide what to sell and when.
A worked example
Say you sell for 4,000,000 kr a home you bought for 2,500,000 kr. The agent fee was 100,000 kr and you have receipts for a new kitchen and bathroom worth 200,000 kr. The gain is 4,000,000 − 2,500,000 − 100,000 − 200,000 = 1,200,000 kr. The tax is 22% × 1,200,000 = 264,000 kr. Without the receipts the gain would have been 1,400,000 kr and the tax 44,000 kr higher; that is why the paperwork is worth your time. If you buy a new home you can defer those 264,000 kronor interest-free. Try your numbers in the property capital gains calculator.
My recommendation
Get two things right and the rest takes care of itself: gather every receipt for what you improved, and claim uppskov if you buy a new home, because deferring the tax is free. Always work through the gain before the sale so you know what is coming in the tax return, and check whether you have losses to offset the same year. When you want to compare paying now against deferring, there is both the property capital gains calculator and, for securities, the capital gains calculator.