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How to Prorate Apartment Rent


If an apartment you wish to rent will be ready before the first of the month, you and your landlord may agree to start your lease earlier. You should pay "prorated rent" in this situation, reflecting the fact that you only have possession of your new apartment for a portion of the first month. Here's how to calculate prorated rent so you can check your landlord's math before you sign your lease:

Difficulty: Easy
Time Required: A few minutes

Here's How:

  1. Determine how many days there are in your first month. If you've arranged with your landlord to have your lease begin on November 20, for instance, then note that there are 30 days in the month of November.
  2. Divide your monthly rent by the total number of days in the month. Following the above example, if your monthly rent will be $600, then divide this figure by 30. The result -- $20 -- is the amount of rent per day for each day of November. ($20 per day times 30 days equals $600.)
  3. Figure out how many days you'll have the apartment in the first month. Following the above example, if your lease begins on November 20, then you'll have the apartment for 11 days in the first month (November 20-30).
  4. Calculate the prorated rent. Multiply the number of days (step 3) by the daily rent (step 2) to determine the prorated rent for your first month. In this example, you would multiply 11 days by $20 to get $220. So, you would owe $220 in rent for November, then $600 a month beginning with December's rent.


  1. You may find it easier to refer to a calendar for the month in question.
  2. When performing your calculations, keep in mind that every day -- weekdays, weekends, and holidays -- must be counted.
  3. If your first partial month happens to be February during a leap year, remember that it has 29, instead of 28, days.

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