Tax on selling land to a developer.
The tax on a land sale can be substantial, especially once there is planning permission. Here is what applies and why, then get it modelled properly before you commit.
We are developers, not accountants. This page explains the tax on selling land in plain terms so that you know what questions to ask. It is not tax advice, and your position depends on your own circumstances and on the rules in force at the time. Get advice from a qualified accountant before you sell. The difference it makes is usually far more than the fee.
We deliberately do not publish tax rates, allowances or thresholds on this page. They change at every Budget, and a stale figure on a tax page is worse than no figure at all. For the authoritative current position, see HMRC's guidance on gov.uk.
The main tax: capital gains.
When you sell land for more than you paid for it, or more than it was worth when you acquired it, the profit is a capital gain, and capital gains tax usually applies.
The gain, broadly, is the sale price minus what you originally paid, minus certain allowable costs. Tax is charged on that gain, not on the whole sale price, which is an important distinction and one that reassures a lot of landowners when they first hear it.
How much depends on your other income, whether you are selling as an individual or through a company, which reliefs apply to your situation, and the rules in force at the time. All of which is exactly why this needs an accountant rather than a website. We are not going to quote you a rate that may be out of date by the time you read this.
Why planning permission changes the tax.
This is the thing that makes selling land different from selling a house.
Land with planning permission can be worth many times what it was worth without it. That uplift is the good news, and it is the whole reason a developer wants your land. But it also means a much larger capital gain, and therefore a much larger tax bill than you might be expecting.
Two landowners selling adjacent fields can end up in completely different tax positions, depending on when and how planning was obtained, whether an option or promotion agreement was involved, and what the land was worth when each of them acquired it.
This is also why how you sell matters for tax, not just how much you get. The structure, whether that is an outright sale, an option, a promotion agreement or a share in a development, can change both the timing and the character of the gain. Option agreements explained →
Selling part of your land or garden.
Selling off part of your garden or grounds to a developer or a neighbour is common, and the tax treatment has a wrinkle worth knowing about.
The gain on your main home and its garden can qualify for relief that exempts it from capital gains tax. But that relief has limits on the size of grounds it covers, and selling off a plot separately from the house, especially after you have moved out, or specifically for development, can fall outside it.
Sell the plot together with the house and it may be covered. Sell it separately for development and it may be a taxable gain. The details decide it, and they are fact-specific to your property and your circumstances.
This is precisely the kind of situation where an hour with an accountant before you sell saves a great deal. Get the sequence and the structure right and the tax outcome can be very different.
Reliefs that might apply.
Several reliefs can reduce the tax on a land sale. Whether any applies to you is entirely fact-specific, so we name them rather than quantify them.
Private Residence Relief
For your main home and its qualifying garden and grounds, within limits on the area covered.
Business Asset Disposal Relief
Where the land is a qualifying business asset. The conditions are strict and worth checking early.
Rollover Relief
Where the proceeds are reinvested into other qualifying business assets within the permitted window.
Agricultural reliefs
Farming and agricultural land carry their own reliefs, with their own conditions. See below.
Each of these has detailed conditions, and both the rules and the rates change. We list them so that you know to ask your accountant "do any of these apply to me?", not so that you can self-assess. Getting a relief wrong is expensive in both directions: claiming one you are not entitled to, and missing one you are.
Agricultural land.
Selling farmland or agricultural land for development carries its own considerations. The shift from agricultural use to development value is exactly where the largest gains and the most specialist reliefs both live.
Agricultural land can attract specific reliefs, but they interact with how the land has been used, for how long, and what it is being sold for. Selling agricultural land with planning for development is a different tax question from selling it as ongoing farmland, even where the field is the same field.
This is specialist territory, and it calls for an agricultural or rural-focused accountant rather than a general practice, and certainly rather than a website.
How the tax is worked out, in principle.
Without a single number, here is the shape of the calculation, so you understand what your accountant will be doing.
- 1. The gain is the sale proceeds, minus the original cost or the value when you acquired it, minus allowable costs such as professional fees and some improvement costs.
- 2. Less any reliefs that apply to your circumstances.
- 3. Less your annual exempt amount, if you have it available.
- 4. Taxed at the applicable rate, which depends on whether you are an individual or a company, on your other income, and on the rules in force.
Every one of those steps has conditions and current figures that change. That is the calculation your accountant does properly, with your actual numbers.
We deliberately do not provide a tax calculator here. A land tax calculator running the wrong year's rates is worse than no calculator at all, and estimating your tax bill is advice we are not qualified to give. Your accountant will model it accurately, and it is the one part of this you should not do from a website.
Get this modelled before you sell.
Work out the tax before you commit to a sale, not after.
Because how and when you sell affects the tax, getting advice early, before you sign an option, a promotion agreement or a sale contract, can change your net proceeds significantly. Once you have signed, the structure is fixed, and so is much of the tax that follows from it.
We will happily talk you through the sale options and how each is generally treated, so that you arrive at your accountant with the right questions. But the modelling itself is theirs to do, not ours.
- HMRC's own guidance on gov.uk, the authoritative source on the current rules
- An accountant, ideally one who does property or agricultural land
Sell your land to us →, and we will factor an honest conversation about structure into it. Meet the team →
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- Call0333 577 1988
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Been offered an option? Option agreements → · Sell your land →
Tax on selling land, answered.
Do I pay tax when I sell land?
Usually yes. If you sell for more than you paid, the profit is a capital gain and capital gains tax generally applies. It is charged on the gain, not on the whole sale price. The amount depends on your circumstances and the rules in force, so take advice from an accountant.
What tax do I pay on selling land with planning permission?
Typically capital gains tax, and often a larger bill than expected, because planning permission can greatly increase the land's value and therefore the gain. The structure of the sale affects it, so have it modelled before you commit.
Why does planning permission increase my tax?
Because it increases your land's value, often several times over. A bigger gain means a bigger taxable amount. The uplift that makes your land valuable to a developer is also what raises the tax.
Is selling part of my garden taxable?
It depends. Selling it together with your main home may be covered by Private Residence Relief, while selling a plot separately for development, particularly after moving out, may be a taxable gain. It is fact-specific, so get advice.
Are there reliefs that reduce the tax?
Possibly. Private Residence Relief, Business Asset Disposal Relief, Rollover Relief and agricultural reliefs can all apply in the right circumstances. Whether any applies to you is a question for your accountant, as each has detailed conditions.
How is capital gains tax on land calculated?
Broadly: sale price, minus original cost and allowable costs, minus any applicable reliefs and annual exemption, taxed at the applicable rate. Every step has conditions and figures that change, which is why it needs professional calculation.
Can you tell me how much tax I will pay?
No. We are developers, not tax advisers, and it depends entirely on your circumstances and the current rules. We can explain the sale options; an accountant models the tax.
Should I get advice before or after agreeing a sale?
Before. How and when you sell affects the tax, so early advice, before signing an option, a promotion agreement or a contract, can meaningfully change your net proceeds.