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About this tool
Work out pro-rata rent for a part month on move-in or move-out, using actual days, a 30-day month or a 365-day year.
The Proportionate Rent Calculator apportions rent for a part month on move-in or move-out, using rent x days occupied / days in that calendar month, or a 30-day month, or a 365-day year, whichever convention the lease specifies. Whole calendar months always bill the full monthly rent, so only the first and last part months are apportioned. It shows the daily rate, a month-by-month breakdown and the same period priced by all three conventions, so a landlord and tenant can see exactly where a disputed figure comes from.
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Enter the values you already know.
Fine-tune the options to match your scenario.
Read the result and use it in your planning or reporting.
Prices the same dates by actual days, a 30-day month and a 365-day year so a disputed figure can be traced.
A month occupied end to end bills one month's rent, avoiding the common spreadsheet error of billing 28/30ths for February.
February 2028 is treated as 29 days, and the 365-day method switches to 366 in a leap year.
The most common method multiplies the monthly rent by the number of days occupied and divides by the number of days in that calendar month. On a rent of Rs 30,000 with occupation from 16 to 31 January, that is 30,000 x 16 / 31 = Rs 15,483.87. Both the first and last day of occupation are normally counted.
It depends on what the lease says, and the difference is real. For 16 days of occupation on a Rs 30,000 rent, a 30-day divisor gives Rs 16,000 while the 31 actual days of January give Rs 15,483.87 — about Rs 516 apart. Indian and UK tenancies usually use actual days; many US leases specify a 30-day month. Check the clause before arguing about the number.
Yes, if they occupy the whole month. A calendar month occupied from the first day to the last bills one month's rent regardless of whether it has 28, 29, 30 or 31 days. Apportionment only applies to the part months at the start and end of the tenancy.
Only if the tenancy agreement says so. Many leases require a full month's notice ending on a rent day, in which case rent runs to the end of the notice period rather than the move-out date, and that is a contractual matter rather than a calculation one. This tool computes the apportionment; the lease and any applicable rent control legislation determine which dates apply, so take advice if the amount is disputed.
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