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Rent and charges prorata calculator
Calculate the amount due when a tenant moves in or out during a month, based on actual calendar days.
✓ Actual calendar days✓ Data not stored✓ Printable result
Step 1 of 5
About 2 minutes
Before calculating
The first and last days are included. February and leap years are handled automatically.
The security deposit cannot be used to pay the last month's rent. The result is an estimate and not legal advice.
Frequently asked questions
What is a rent prorata?
A prorata calculates the amount due when a tenant occupies a home for only part of a month, particularly when moving in or out. Monthly rent is allocated using the actual number of relevant days.
How is rent prorata calculated?
Multiply the monthly amount by the number of days due, then divide by the month's actual number of days: Prorata = monthly amount × days due ÷ days in month. If notice ends on 12 October, 12 out of 31 days are due. Homellya calculates rent excluding charges and monthly charges separately.
Should every month be calculated on a 30-day basis?
No. The calculation uses the month's actual 28, 29, 30 or 31 calendar days. Service-Public also uses actual calendar days for final rent.
Is the move-in or move-out day included?
Yes. Both the first and last days for which rent remains due are counted.
Which date should be used when a tenant moves in?
Generally, use the lease effective date. If keys are handed over on another date or access is deferred, check the lease and the parties' agreement.
Which date should be used when a tenant moves out?
Use the date through which rent legally remains due, generally the notice end date. The calculator does not determine whether the notice is valid.
Does returning the keys automatically end rent liability?
No. An exit inspection and early return of the keys do not necessarily end payment before notice expires. The parties may agree an earlier end, notably if a new tenant moves in with the landlord’s agreement. Record the end date, last billed day, inspection and key-return dates in writing. Service-Public
Should charges also be prorated?
Monthly provisions or fixed charges can be prorated to estimate the amount called. Provisions remain subject to later reconciliation against actual costs. Service-Public
Can the security deposit pay the last month's rent?
No. The security deposit cannot be deducted from the last rent or charges and is returned separately, less legally justified deductions. Service-Public
Does the calculator result have legal value?
No. The result is an estimate based on the information entered and general rules. It does not replace a review of the lease, evidence and individual circumstances, or determine the legal end of the lease or notice on its own. Seek advice from ADIL if in doubt or in case of disagreement.