Risk warning: Don't invest unless you're prepared to lose all the money you invest. Peer-to-peer lending is a high-risk investment and is not covered by the Financial Services Compensation Scheme (FSCS). You are unlikely to be protected if something goes wrong. Take 2 minutes to learn more.

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Free tools

ISA tools & calculators

Quick, free tools to help you plan. All are illustrative guides only, not personal financial advice.

Last reviewed May 2026 · by Gareth Hoyle

Which ISA is right for me?

Answer a few questions and see which type of ISA tends to fit your goals, timeframe and risk appetite.

ISA allowance calculator

Track how much of your £20,000 ISA allowance you've used across cash, stocks & shares, IFISA and Lifetime ISAs.

Returns calculator

Illustrate how cash, stocks & shares and peer-to-peer ISA returns could differ over time. Illustrative only.

ISA tax-saving calculator

Estimate the tax you'd save by holding P2P or savings interest inside an ISA versus outside it. Illustrative only.

P2P income calculator

Estimate the monthly and annual income a P2P ISA could produce at a given rate, and see how assumed bad debt changes it. Illustrative only.

Platform risk checklist

Work through the due-diligence questions worth asking before you trust any peer-to-peer platform with your money.

How we keep this honest

peertopeerisa.co.uk is independent. We provide general information and comparison only, not regulated financial advice. Peer-to-peer lending is a high-risk investment: your capital is at risk and your money is not FSCS protected. Some links are affiliate links, which never affect what we write.