# Prorated Rent Calculator

Calculate prorated rent for a partial month. Find your daily rate and exact amount owed when moving in or out mid-month.

## What this calculates

Figure out exactly how much rent you owe for a partial month. Whether you are moving in on the 15th or moving out on the 10th, this calculator breaks your monthly rent into a daily rate and multiplies by the days you actually occupy the unit.

## Inputs

- **Monthly Rent** ($) — min 0 — Your full monthly rent amount.
- **Days in Month** — min 28, max 31 — Total days in the billing month (28-31).
- **Days Occupied** — min 0, max 31 — Number of days you will occupy the unit this month.

## Outputs

- **Daily Rate** — formatted as currency — Your rent cost per day (monthly rent / days in month).
- **Prorated Rent** — formatted as currency — The partial month's rent you owe.
- **Savings vs Full Month** — formatted as currency — How much less you pay compared to a full month.

## Details

Prorated rent is simple: divide your monthly rent by the number of days in the month to get a daily rate, then multiply by the days you will actually live there. If your rent is $1,500 and you move into a 30-day month on the 16th, you occupy 15 days. Your daily rate is $50, so you owe $750 for that partial month.

Landlords typically use one of two methods: dividing by the actual days in the calendar month (28, 30, or 31), or using a banker's month of 30 days. The calendar-day method is more common and what this calculator uses. Always check your lease to confirm which method applies.

Some landlords prorate the first month and require full payment on the last month, while others prorate both. If you are negotiating a lease start date, moving in later in the month means a smaller first payment, which can help with upfront costs like security deposits and moving expenses.

## Frequently Asked Questions

**Q: How is prorated rent calculated?**

A: Divide your monthly rent by the number of days in the month to get a daily rate, then multiply by the number of days you will occupy the unit. For example, $1,200 rent in a 30-day month gives a $40 daily rate. If you move in on the 21st and stay 10 days, you owe $400.

**Q: Do landlords have to prorate rent?**

A: There is no federal law requiring proration, and it varies by state and lease terms. Most landlords will prorate rent for move-in, but some require a full month upfront. Always check your lease agreement and local tenant rights laws before assuming proration applies.

**Q: Should I use 30 days or the actual days in the month?**

A: Use the actual number of calendar days in the month for the most accurate result. February has 28 (or 29 in a leap year), April has 30, and January has 31. Some landlords use a flat 30-day month for simplicity, which can slightly over- or under-charge depending on the month.

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Source: https://vastcalc.com/calculators/finance/prorated-rent
Category: Finance
Last updated: 2026-04-08