Start with take-home income
Use the amount that reaches your bank account each month, after tax, National Insurance, pension contributions and other deductions. If your income changes, use a cautious average or test a lower-income month as a separate scenario.
Count the whole monthly cost
Add the rent to council tax, energy and water, broadband or phone, food, transport, debt repayments and everyday spending. Ask whether bills are included, and whether the rent is shared with someone else. A room in a shared home and a place of your own can produce very different budgets.
Subtract those costs from take-home income. A positive remainder is a useful first sign, but think about whether it leaves enough for irregular expenses, savings and the things that make your budget sustainable. If the total is negative, the plan needs a change before the move: lower costs, more income, fewer commitments, or more time to prepare.
Check the move-in savings separately
Monthly affordability and move-in readiness are different questions. You may be able to manage the monthly budget but still need time to build savings for rent due at the start, a deposit and moving or setup costs. Keep an emergency buffer in your plan so that every pound is not committed on day one.
Try a few versions of the plan
- Compare a house share with living alone.
- Try a lower rent or a different area and include transport changes.
- Check what happens if one bill is higher than expected.
- Set a monthly saving amount you can maintain, not just manage once.
- Revisit the plan as real quotes and property details become available.
Use a score as a prompt, not a decision
An affordability score can help you notice how monthly breathing room and savings progress change when you edit the inputs. It cannot know every detail of your situation and should not decide whether you sign a tenancy. Review the underlying numbers and get independent support if you need help with debt or housing costs.
Use the free Move Out Planner to estimate monthly leftover, an upfront target, a savings gap and a rough timeline. You can also read how to plan for the cost of moving out.
This guide is general information, not financial, legal or tenancy advice. Your actual costs depend on your income, location, household and tenancy agreement.