Sumplain

Finance tools

Finance calculators and tools

Clear calculators for savings, borrowing, income, and everyday money decisions.

All tools

8 tools available now, with more on the way.

Frequently asked questions

Quick answers about the result and its assumptions.

How do I use these finance tools?

Choose a tool, enter the values you know, and review the result and assumptions before making a decision.

Are these results professional advice?

No. These tools are educational references. Use them alongside information from a qualified professional when appropriate.