Prorated Rent Calculator

Work out prorated rent when you move in or out part way through a month, comparing actual days, a 365-day year and a 30-day month side by side.

Reviewed by Dany, RightSums team · Updated

Runs in your browser. Free, no sign-up.

personal-finance · Daily life · UK & US

Enter your rent per month, week or year and your move-in date, move-out date or any two dates. The calculator works out the rent for the part of the month three ways: by the actual days in that month, on a yearly basis of rent times 12 divided by 365 (366 in a leap year), and on a 30-day month, often called the banker's method. Seeing all three side by side shows tenants and landlords how much the choice of method changes the bill. For a move-in, it adds the next month's rent and any deposit to show the first payment. Date ranges across several months are split month by month. Your lease or tenancy agreement decides which method applies.

Accepted inputs

  • Rent per month, week or year
  • Move-in date
  • Move-out date
  • Start and end dates for a range
  • Deposit (optional)
  • Next month due up front (optional)

Outputs

  • Prorated rent by actual days
  • Prorated rent on a 365 or 366-day year
  • Prorated rent on a 30-day month
  • Daily rate for each method
  • First payment when moving in
  • Month-by-month breakdown
  • Gap between methods

How to use the Prorated Rent Calculator

  1. Enter your rent and whether it is quoted per month, per week or per year.
  2. Choose a move-in date, a move-out date or a start and end date, and the tool counts the days, including the first and last day.
  3. It works out a daily rate by actual days in the month, by a 365 or 366-day year and by a 30-day month, then multiplies by the days you pay for.
  4. For a move-in, it adds the next month's rent and any deposit you enter so you can see the first payment under each method.

Frequently asked questions

How do you calculate prorated rent?

Divide the monthly rent by the days in that month to get a daily rate, then multiply by the days you live there. Rent of $1,500 in June, moving in on 20 June, is 11 of 30 days: $1,500 ÷ 30 × 11 = $550.00. Your lease may use a different method, so check it first.

What is the difference between the 365-day and actual days methods?

The yearly basis spreads a year of rent evenly over every day: monthly rent × 12 ÷ 365, or ÷ 366 in a leap year. For $1,500 moving in on 20 June, that is $542.47 for 11 days, $7.53 less than the $550.00 you get by dividing by June's 30 days.

How do you prorate rent in the UK?

There is no single legal formula, so your tenancy agreement decides. On £950 a month, moving in on 20 June costs £348.33 by actual days or £343.56 on a 365-day year. Shelter says that if a private assured tenancy ends part way through a rental period, the landlord must refund rent for the days after it ends.

What is the banker's 30-day method for rent?

It treats every month as 30 days, so the daily rate is always rent ÷ 30. That costs more in a 31-day month and less in February. Moving out on 10 July with rent of $1,500 costs $500.00 this way, against $483.87 using July's 31 actual days.

How much do I pay when I move in mid-month?

Usually the prorated rent for the rest of the month, and often the next full month and a deposit too, depending on your lease. With $1,500 rent and a 20 June move-in, the prorated $550.00 plus July's $1,500 comes to $2,050.00 before any deposit.

Sources

The rates and rules in this tool come from:

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