Rent Calculator
Check what share of your take-home income your rent takes, and the most rent a chosen share would allow.
30% is a common guide, not a rule. Adjust it to your situation.
- Rent as a share of income
- 34.29%
- Most rent at your chosen share
- $1,050.00
Rent of $1,200.00 takes 34.29% of take-home income. At 30%, the most you would spend is $1,050.00 a month.
How it is calculated
Rent share = rent ÷ take-home income × 100; most rent = income × chosen share ÷ 100
Example: $1,200 of rent on $3,500 take-home pay takes 34.29%. At a 30% guide, the most you would spend is $1,050.
Assumptions and limitations
- The share you choose is a guide. Lenders and landlords use their own tests.
- Take-home income is used, so the share reflects what you actually receive.
- Bills, debt and savings are not counted in the rent share.
What this calculator tells you
Rent is often the largest regular cost in a household budget. This calculator shows what share of your take-home income your rent takes, and the most rent that a chosen share would allow. It helps you judge whether a home is affordable before you commit to a lease.
The share is a planning tool rather than a rule set by any authority. Budgeting guides often suggest that rent should stay near a third of take-home income, but the right figure depends on your other costs, savings and the size of your household.
How the share is worked out
The rent share equals monthly rent divided by monthly take-home income, multiplied by 100. Take-home income is income after tax and mandatory deductions, which is the money you actually have to spend and save. The maximum rent for a chosen share equals take-home income multiplied by that share.
A worked example
Suppose your take-home pay is 3,000 a month and the rent is 1,200. The share is 1,200 divided by 3,000, which is 40%. If you want to keep rent at 30% of take-home pay, the most you should pay is 900 a month. The gap of 300 a month would have to be found in other spending or by a cheaper home.
What the share does not show
The rent share does not account for the costs that come with a home, such as utilities, council or municipal taxes, transport, insurance and the deposit needed to move in. A low rent share can still leave little room if the other costs are high. Equally, a higher share may be manageable if you have a high savings rate or few other fixed costs.
Lenders and landlords may use their own affordability tests, often based on gross income. The take-home measure here is stricter, which is useful for your own planning.
Limits of the calculation
The calculator uses your monthly take-home income and monthly rent as entered. Irregular income, such as commission or freelance work, should be averaged over several months. Rent rises at renewal, so a share that works today may not in a year. The result also does not show how much you would have left after all essential costs.
When the share is too high
If your rent share is above your target, look at the options in order of their effect: a smaller home, a different area, sharing costs with another adult, or a longer lease that fixes the rent for longer. Each option has trade-offs in space, commuting and flexibility, so compare the total monthly cost rather than the rent alone.
Using the result
Use the share and the maximum rent to set a search budget, and then check the full monthly cost including bills and transport. If the share is high, consider a smaller home, sharing costs, or a different area. Build a buffer for rent increases when you plan the budget.
Thinking about the lease term
The length of a lease affects how much flexibility you have. A short lease can make it easier to move, but rents may rise more often. A longer fixed-term lease gives certainty, though breaking it early can be costly. Compare the total cost of each option, including any notice period, deposit and the likelihood of a rent increase, rather than only the monthly figure.
Frequently asked questions
Is the 30% figure a rule?
No. It is a common guideline in budgeting advice, not a legal or lending rule. Your own affordability depends on your other costs and savings, so use it as a starting point.
Should I use gross or take-home pay?
This calculator uses take-home pay, which is the money you have available after tax and deductions. Gross pay gives a higher-looking share, so the take-home figure is the stricter test.
Does the share include bills?
No. It covers rent only. Add utilities, taxes, transport and insurance to see the full cost of living in the home.
What should I do if my irregular income varies?
Average your take-home pay over several months, or use a lower month as the basis, so the share reflects a difficult period as well as a good one.
How much should I save before renting?
The deposit and first month's rent are often required up front. Include these in your savings plan, along with a cushion for moving costs and the emergency fund you would want in place.