Loading FinTrex page
Tax
Estimate simplified 2026/27 CGT after the annual exempt amount and remaining basic-rate band.
Calculator currency
This rule-sensitive calculator is fixed to GBP (UK 2026/27) for United Kingdom.
FinTrex result
UK Capital Gains Estimate
Estimated Capital Gains Tax
£3,618
Taxable gain after annual exempt amount
£17,000
Annual exempt amount used
£3,000
What changes this most?
Taxable gains can use two CGT rates when taxable income leaves part of the basic-rate band unused.
Sensitivity check
A roughly 10% move in net capital gain after allowable losses changes the modeled headline result by up to £480 in this setup.
Simplified 2026/27 estimate only. Reliefs, losses from other years, residence status and asset type can change the tax.
Use the number fields, sliders, or a quick preset. You can fully clear a field while editing.
Formula
The 2026/27 annual exempt amount is deducted from net gains, then taxable gains use remaining basic-rate band at 18% and the balance at 24%.
Rule context
Enter taxable income after Personal Allowance and net gains after allowable losses. This simplified estimate excludes special reliefs, carried losses, BADR, non-resident rules and asset-specific exceptions.
Rule-sensitive references
Related analysis
Tax
Use versioned UK tax tools for take-home, bonuses, dividends, capital gains, self-employment and VAT without treating FinTrex as a tax adviser.
Open →Car Affordability
Combine finance with insurance, tax, fuel or charging, maintenance and modeled depreciation before comparing options.
Open →Retirement
Estimate fund size, income, contribution needs and gaps, then stress-test sequence risk and earlier retirement.
Open →