See how the result changes: what-if tables and charts

The short answer

Below the calculator you will find tables under See how the result changes, and often a chart. Each row of a what-if table re-runs the calculator with one input changed and everything else left as you entered it.

What-if tables

These tables answer questions like what happens to the answer if one number were different. Because only one input changes at a time, you can see which input has the biggest effect.

1. 1Enter your own values in the calculator first.
2. 2Scroll down to See how the result changes.
3. 3Read across a row to compare its changed input with the new result.
4. 4Compare the rows against your own result at the top.

Charts

Some calculators show a chart under the result. On loan calculators, for example, a chart shows the principal against the interest, so you can see how much of what you pay is interest.

Good to know

• A what-if table keeps your other inputs exactly as they are.
• The tables and charts are based on the numbers you entered, so they are as good as those numbers.
• They show guidance, not advice, so check important decisions with a professional.
• If you change your own inputs, scroll down again to read the updated tables.