Prorated rent calculator
Prorated rent is rent for part of a month, worked out from the days a tenant has the home. Enter the monthly rent and a move-in or move-out date to see the amount three ways: by the actual days in the month, on a 30-day month, or on a 365-day year. Your lease decides which one applies.
Your files
The full rent for a whole month.
The first day you count for a move-in, or the last day for a move-out.
Results
Enter the monthly rent and the date to see your results.
Editable spreadsheet
Pro gives you this calculation as an Excel file with live formulas, so you can change a number and watch every result update. It opens in Excel and Google Sheets.
Get Pro for the Excel fileThese figures are estimates for planning. They are not financial, tax or investment advice. Leases differ on how to prorate the first or last month, so your lease decides which of these methods applies. Working out a result is free and never counted. Saving the PDF counts as one of your free uses; Pro has no limit.
The formulas in words
- Days counted for a move-in = days in the month minus the move-in day, plus 1. For a move-out, the days counted are the move-out day.
- Actual days: prorated rent = monthly rent divided by the days in that month, times the days counted.
- 30-day month: prorated rent = monthly rent divided by 30, times the days counted, with days past the 30th counted as the 30th.
- 365-day year: prorated rent = monthly rent times 12, divided by 365, times the days counted.
How do I calculate prorated rent?
Divide the monthly rent by the number of days in the month to get a daily rent, then multiply by the days the tenant has the home. A $1,200 rent in a 30-day month is $40 a day, so 10 days is $400. The calculator above does this for any date and shows the other two methods too.
Which proration method should I use?
Use the one your lease says. Many leases divide by the actual days in the month, some use a flat 30 days, and some use a 365-day year, which gives a slightly different amount in every month. If the lease is silent, pick one method, write it down and use it for every tenant.
Is the move-in day counted?
Usually yes. A tenant who moves in on the 18th of a 30-day month has the home on the 18th through the 30th, which is 13 days. For a move-out, the move-out day is usually counted too, so moving out on the 10th means 10 days. Check what your lease says about the first and last day.
What changes in February or a 31-day month?
The daily rent changes with the month length. In a 31-day month the actual-days method divides by 31, and in February it divides by 28 or 29. The 30-day method ignores month length, which is why the three amounts can differ for the same dates. The calculator reads the real month from your date.
Put the numbers on paper
- Put it in writing: lease agreement template: state the rent, the due date and how a partial month is prorated.
- Rent receipt template: record the prorated payment you receive.
- Move-in inspection checklist: record the condition of the unit on the move-in date.
- Rent increase calculator: work out the next rent when the lease renews.
- Late fee calculator: work out a late fee when rent is not paid on time.
- PDF tools and templates for landlords: the paperwork for a rental in one place.
- All business calculators: the full list of free calculators.
Key facts
- Privacy: We don't sell your data. This tool runs in your browser, so your files stay on your device and are never uploaded.
- Ads: none. No third-party ads and no ad cookies.
- Limits: working out a result is free, needs no account and is never counted. Saving the result as a PDF counts as one of your free uses. Emailing it to yourself is optional. Pro has no limit on uses with Pro.
- Price: free to start. The editable Excel version with live formulas is part of Pro, $2.99 a month or $24 a year. Pro cancels in one click.
- Results are estimates for planning, not financial, tax or investment advice.
Last updated:
By the PDFinish editorial team · Reviewed
Common questions
Is the prorated rent calculator free?
Yes. Working out a result is free, needs no account and is never counted. Saving the result as a PDF counts like any other PDFinish file under the free allowance shown on this page. The editable Excel version is part of Pro.
Are my numbers uploaded?
No. The maths runs in your browser and nothing you type is sent to our servers. If you choose Email it to me, only the finished PDF is sent, to the address you give, and we delete it after 7 days.
Does the law say how rent must be prorated?
Rules vary by state and city, and many leave the method to the lease. This calculator does not state what the law requires where you live. Read your lease and check your local rules, or ask a lawyer, before you ask a tenant to pay.
What does the Excel download include?
Pro members can download a spreadsheet with your inputs in cells and live formulas for the days counted, the daily rent and the prorated rent by each method. Change a number in Excel or Google Sheets and every result updates.
Is this legal or financial advice?
No. The results are estimates for planning. They are not legal, financial or tax advice, and the method you use must match your lease. Ask a qualified adviser about your own situation.