Tax Intelligence Hub
How Tax Works on Development & Flips in the UK
Ground-up development and buy-to-sell flips are usually treated as a trade, so profit is Income or Corporation Tax rather than CGT — and VAT drives the whole scheme. The biggest question is whether HMRC sees you as trading or investing.
Educational guidance only. This is general information about how UK property taxes typically work by deal type — it is not tax, legal or financial advice, and rates and rules change. Always confirm your position with a qualified accountant or tax adviser before making any investment decision.
Buying-in taxes
- SDLT — residential or non-residential bands depending on the site; the 3% surcharge applies to residential purchases.
- Land / bare-land purchases — may be non-residential SDLT rates; mixed sites are assessed on their character.
- VAT on land — may be chargeable if the seller has opted to tax; often recoverable if you register for VAT.
- Company purchase — 3% surcharge on residential; 15% flat rate risk on high-value dwellings for certain buyers.
Taxes during the build
- VAT — new-build residential construction is often zero-rated for sale, but conversions are typically 5% and commercial works 20%. The VAT position drives the whole scheme.
- Income Tax / Corporation Tax — development is a trade; profit is taxed as trading income, not capital gains.
- Class 2/4 National Insurance — sole-trader developers pay NICs on trading profit.
- Construction Industry Scheme (CIS) — you may need to deduct and remit tax from payments to subcontractors.
- Community Infrastructure Levy (CIL) & Section 106 — local-authority development charges, not a tax per se but a significant cost tied to planning.
- Business Rates — may apply to a site during works in some cases.
Taxes when you sell the finished units
- Income Tax / Corporation Tax on trading profit — the whole development margin is taxed as trade profit, at personal rates or company rates.
- VAT on sale — zero-rated first sale of new dwellings (allowing input VAT recovery); standard-rated on commercial unless opted differently.
- No CGT — because it is a trade, Capital Gains Tax does not apply to the development profit.
- Dividend / extraction tax — taking profit out of a development company triggers further personal tax.
- Corporation Tax payment timing — large developments may fall into quarterly instalment payments.
Tax lifecycle
Income Tax vs CGT — trading or investment?
The single biggest tax question for this deal type. HMRC weighs your intention and pattern of activity.
Likely TRADING → Income / Corp Tax
- Intention to sell quickly for profit
- Multiple projects / repeated activity
- Short holding period
- Financing arranged for a quick sale
- Marketing the finished units for sale
Likely INVESTMENT → CGT
- Intention to hold and let
- One-off, long holding period
- Rental income taken
- No pattern of buy-to-sell
Worked Example — Two-Unit Flip
£300,000 site, £180,000 build cost, sold as two new dwellings for £620,000 total. Run through a limited company treated as trading.
Includes ~£25k SDLT, finance and professional fees.
First sale of new-build homes is zero-rated, so input VAT is recoverable.
None — development profit is trading income, not a capital gain.
Development margin — where the money goes
VAT treatment by build type
Colour indicates the factually more/less favourable figure per row, not a recommendation.