Prorated Rent Calculator
Rent for a part month when you move in or out mid-month, worked out three common ways: by the actual days in that month, by a 365-day year, and by a 30-day banker's month.
Result…
How it's calculated
Actual days: rent ÷ days in that month × days occupied 365-day year: rent × 12 ÷ 365 × days occupied 30-day month: rent ÷ 30 × days occupied (at most 30) Moving in: days = days in month − move-in day + 1; moving out: days = move-out day
When a tenancy starts or ends part way through a month, the rent for that month is usually prorated: you pay only for the days you have the home. There are three common ways to work out the daily rate. The actual-days method divides the monthly rent by the number of days in that month, so a day in February costs more than a day in March. The yearly method spreads twelve months of rent over 365 days, giving the same daily rate all year. The banker's-month method treats every month as 30 days. This calculator shows all three side by side, counts the days for you from the date, and shows each step, so you can check a landlord's figure or agree one before you sign.
Your numbers, step by step
About the Prorated Rent calculator
This prorated rent calculator works out the rent for a part month when you move in or move out mid-month. Enter the monthly rent and the date, and it counts the days you pay for, then prices them three common ways: by the actual number of days in that month, by spreading twelve months of rent over a 365-day year, and by a 30-day banker's month. The three answers sit side by side, because leases and landlords do not all use the same method, and the difference can matter in a short month such as February. Tenants use it to check a first or last rent payment, and landlords and letting agents use it to agree a figure before a tenancy starts. Each step of the working is shown with your own numbers. For a full monthly budget, see the rent affordability calculator.
How to use it
- Enter the “Monthly rent” from your lease.
- Choose “Part month”: “Moving in” to pay from the date to the end of the month, or “Moving out” to pay from the 1st to the date.
- Pick the “Move-in or move-out date”. That day counts as a day you pay for.
- Compare the three results and use the one your lease names; the steps show the daily rate for each.
Worked example
The rent is 1,450 a month and you move in on 18 November 2026. November has 30 days, so you pay for 13 days (18 to 30 November). By actual days: 1,450 ÷ 30 = 48.33 a day, × 13 = 628.33. By a 365-day year: 1,450 × 12 ÷ 365 = 47.67 a day, × 13 = 619.73. By a 30-day month: 1,450 ÷ 30 × 13 = 628.33, the same here because November has 30 days. You pay 43.33% of the month and save 821.67 against a full month's rent.
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Questions people ask
How do I calculate prorated rent for a move-in date?
Count the days from the move-in date to the end of the month, including the move-in day, and multiply by a daily rate. The daily rate is usually the monthly rent divided by the days in that month, by 30, or the yearly rent divided by 365.
Which prorated rent method is most common?
It depends on the landlord, the lease and local practice. Many use the actual days in the month, while others use a 30-day month or a 365-day year. Check the lease, and if it says nothing, agree the method in writing.
Why is prorated rent higher in February?
With the actual-days method, February's rent is shared over only 28 or 29 days, so each day costs more than in a 31-day month. The 365-day method gives the same daily rate all year, so it is lower for February.
Is the move-out day included in prorated rent?
In this calculator, yes: it counts from the 1st of the month up to and including the move-out date. Some leases end the tenancy the day before, so check the end date written in yours.
Can a landlord charge a full month instead of prorating?
Whether rent must be prorated, and how, depends on the lease and the law where the home is. The calculator shows the arithmetic, not your rights; for a dispute, ask a tenants' advice service or a legal professional.