Enter the lump sum, your tax band and the real rates on offer today - the calculator taxes each option correctly and ranks them.
The gilt you are weighing up
Price, coupon and maturity are published for every gilt by the UK Debt Management Office (dmo.gov.uk). A low coupon and a price below £100 maximise the CGT-free share of the return.
Best home for your cash after tax
keeps net - about a year on
Only £ can go into an ISA per tax year - the ISA figure assumes the whole sum is (or gets) inside the wrapper.
Premium Bonds pay a tax-free average prize rate (currently ) - not a guaranteed return, and small balances can win nothing.
The gilt figure is its after-tax yield to maturity: coupon taxed as savings income, the rise to £100 par CGT-free.
Estimate only, not financial advice. Rates change - check today's best deals.
| Product | Headline rate | Tax on it | Net yield | Net £/year |
|---|---|---|---|---|
Savings and gilt-coupon income share one Personal Savings Allowance. Each row applies your unused PSA to that product alone, since the lump sum would live in one home at a time.
Compounded at each option's net rate over the gilt's -year life.
| Scenario | Winner | Net yield | |
|---|---|---|---|
Gilt vs Savings vs ISA Calculator by TaxFly — free UK tax calculators