Calculate exact prorated rent for partial month occupancy. Compare 3 calculation methods and see total move-in costs instantly.
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Moving in or out mid-month? Prorated rent ensures you only pay for the days you actually occupy the apartment—no more, no less. Whether you're a tenant trying to budget for move-in costs or a landlord calculating fair charges for a new resident, our calculator shows exactly what's owed using three industry-standard methods. Compare results side-by-side to see which calculation method is most favorable, and get a complete breakdown of all move-in costs including security deposits and fees.
Prorated rent is a partial month's rent calculated based on the exact number of days you'll occupy a rental property. Instead of paying a full month's rent when you move in on the 15th or move out on the 10th, you pay only for your days of occupancy. This fair approach benefits both tenants (who don't overpay) and landlords (who receive appropriate compensation). The calculation method used can result in different amounts—sometimes $50 or more difference on a typical rental. There are three common methods: **Days in Month** divides your rent by the actual days in that specific month; **Days in Year** uses a consistent daily rate based on 365 days; and **Banker's 30-Day** treats every month as having exactly 30 days for simplicity.
Prorated Rent Formulas
Days in Month: Daily Rate = Rent ÷ Days in Month | Days in Year: Daily Rate = (Rent × 12) ÷ 365 | Banker's 30: Daily Rate = Rent ÷ 30Calculate precisely what you'll owe on day one. Our calculator totals prorated rent, security deposit, pet deposit, and any other move-in fees so you can budget accurately and avoid surprises.
Landlords use different proration methods, and each produces a different amount. See all three results side-by-side to understand which method your landlord uses and whether you might save money by negotiating a different approach.
Don't just accept the prorated amount on your lease at face value. Use our calculator to double-check the math and ensure you're being charged fairly based on the stated calculation method.
Moving is expensive. By knowing your exact first month costs (prorated rent + deposits), you can plan your moving budget with confidence and avoid cash flow surprises.
For landlords, consistent proration calculations help demonstrate fair treatment of all tenants. Document your method and use it uniformly to stay compliant with Fair Housing requirements.
The most common scenario—your lease starts on the 15th, 20th, or any day other than the 1st. Calculate exactly how much first month rent you'll owe so you can write the correct check on move-in day.
Moving out before your lease ends? Whether it's for a job relocation, family emergency, or other reason, calculate your final prorated payment to settle your account properly.
When ending a month-to-month tenancy mid-month, calculate the prorated amount for your final days of occupancy rather than paying for the full month.
Property managers and landlords: quickly calculate move-in costs for prospective tenants. Show them a professional breakdown of prorated rent plus deposits.
When a rent increase takes effect mid-month, use proration to calculate the blended amount—part at the old rate, part at the new rate.
Got a prorated rent amount from your landlord but want to verify it's correct? Input the same values and method to confirm their math.
To calculate prorated rent, divide your monthly rent by the number of days in the month (or 365 for yearly method, or 30 for banker's method) to get a daily rate. Then multiply that daily rate by the number of days you'll occupy the unit. For example, if your rent is $1,500 and you move in on March 15th: $1,500 ÷ 31 days = $48.39 daily rate × 17 days = $822.58 prorated rent.