Financial decision guide and interactive simulator

Commitment cost calculator

Can my budget support this dependant, pet or care commitment for its full duration?

What this calculation is designed to show

Recurring life commitments combine monthly care, annual expenses, setup costs and emergencies. Their opportunity cost also includes saving or investing that money elsewhere.

How to test the decision

Model a normal year and a difficult year with higher medical or care costs. Check whether emergency savings still grow and whether the commitment remains affordable if income temporarily falls.

Using the result responsibly

Change one important assumption at a time and compare a cautious case with the expected case. The interactive calculator below updates from the values you enter. Its output is an educational estimate, not financial, tax, legal or investment advice.

Read the calculation methodology or learn about The Finance Check.