ISA allowance calculator UK 2026/27
Track adult ISA subscriptions for 2026/27 across cash, stocks and shares, Lifetime and innovative finance ISAs. See remaining allowance and any excess.
Enter your figures
ISA allowance remaining
Inputs changed. Select Calculate result to update your estimate.
2026/27 adult ISA subscriptions only, for an eligible UK saver aged 18+. LISA contributions have a separate £4,000 limit. Transfers of existing ISA funds and flexible-ISA replacements need separate treatment. Junior ISAs are not included.
How the isa allowance calculator uk 2026/27 works
Remaining allowance = £20,000 − all new adult ISA subscriptions. Show any excess separately.
UK data and rules
2026/27 data · Checked 16 October 2026. Rules are a dated snapshot, not a live feed.
Read about data coverage and updates
Worked example: isa allowance remaining
This illustration uses the calculator’s example inputs. It is not a quote or a recommended financial decision.
- Cash ISA subscriptions (£)
- 3,000
- Stocks & shares ISA subscriptions (£)
- 5,000
- Lifetime ISA subscriptions (£)
- 1,000
- Innovative finance ISA subscriptions (£)
- 0
ISA allowance remaining: £11,000.00
Remaining allowance = £20,000 − all new adult ISA subscriptions. Show any excess separately.
ISA allowance remaining: questions answered
Do ISA transfers count as new subscriptions?
A correctly arranged transfer of existing ISA funds normally differs from a new subscription. This tool tracks new subscriptions; flexible-ISA withdrawals and replacements need separate checks.
Using your result
Example inputs are a starting point. Replace them with your figures and select Calculate result. Results are rounded for display; calculations use unrounded values.
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