Prorated Rent Calculator

Prorated Rent

Prorated Rent Calculator

Work out exactly what you owe for a partial month, based on your move-in and move-out dates. Choose "actual days" or a flat "30-day" method, and get a line-by-line breakdown by month.

How it works

How the Prorated Rent Calculator Works

1

Enter rent and dates

Type your monthly rent, then pick a move-in and move-out date. Both days count as occupied, and the range can cover a single month or stretch across several.

2

Choose the proration method

Stay with actual days for the most precise result, or switch to the flat 30-day method to match your landlord's standard practice.

3

Read, print or save the statement

Get the daily rate, days occupied and a line-by-line breakdown by month — then print it or download it as a PDF for your records.

Features

Prorated Rent Calculator Features

Multi-month breakdown

Move in on the 20th, move out on the 10th two months later — the calculator splits any date range into per-month segments, each with its own day count and daily rate, then totals one statement.

Two proration methods

Switch between actual days in month and the flat 30-day method to match your lease or landlord's convention, and compare the results instantly.

Calendar view

A month-by-month calendar marks exactly which days are counted as occupied — an easy visual check that the right dates went into the math.

Print & PDF statement

Print a clean, receipt-style statement or save it as a PDF — attach it to an invoice, send it to a tenant, or keep it for your files.

Free, no signup, private

100% free with no account. Every calculation runs locally in your browser, so rent amounts and dates never leave your device.

Instant, as you type

No calculate button — the statement updates the moment you change the rent or a date, so comparing scenarios takes seconds.

The basics

What Is Prorated Rent?

Prorated rent is the portion of a month's rent that a tenant pays for occupying a rental for only part of the month. Instead of charging the full monthly amount, the rent is converted into a daily rate and multiplied by the number of days the tenant actually lives in the property — the rental equivalent of paying only for what you use.

It comes up whenever a tenancy doesn't start or end on a rent-cycle boundary: a move-in on the 21st, a move-out on the 15th, a lease that begins mid-week. Landlords prorate to keep units competitive and fill them the day they're ready; tenants pay only for the days they hold the keys. A prorated rent calculator turns that negotiation into a number both sides can verify.

The math

How to Calculate Prorated Rent (With Example)

Every proration follows the same three moves: turn the monthly rent into a daily rate, count the occupied days, and multiply.

Formula

Prorated rent = (monthly rent ÷ days in month) × days occupied

Worked example — moving in on the 21st

Rent is $1,800 and the month has 30 days. Daily rate: $1,800 ÷ 30 = $60. Days occupied: the 21st through the 30th, which is 10 days. Prorated rent: $60 × 10 = $600. Switch the same move-in to a 31-day month and the actual-days rate drops to $58.06, while the flat 30-day rate stays at $60.

The three common proration methods

Actual days in month

Divide by each month's real length (28–31 days). The most accurate approach, and the default here — every month in your range gets its own daily rate.

Flat 30-day month

Always divide by 30. A common landlord shortcut that keeps one daily rate all year — slightly higher in 31-day months, slightly lower in February.

Annual (365-day) rate

Some leases divide yearly rent (monthly rent × 12) by 365 for one blended daily rate. If your lease uses it, the flat 30-day method is the closest match in this calculator — but the lease wording governs.

Use cases

When to Prorate Rent

Mid-month move-ins

The lease starts on any day other than the 1st. Prorate the first month from the move-in date so the tenant pays only for the days remaining.

Mid-month move-outs

The tenant gives notice and leaves before the last day of the month. Prorate the final month from the 1st through the move-out date.

Lease renewals & changes

Renewals, term changes or unit transfers that don't line up with the calendar month can be bridged with a prorated payment.

Landlord discretion

Proration is rarely required by law, but offering it fills vacancies faster and signals fairness from day one. Many landlords write their proration policy into the lease.

Who it's for

A Fair Bill for Landlords and Tenants

For landlords

  • Fill vacancies faster — quote an exact move-in amount the moment a prospect asks, so a unit can be occupied the day it's ready — even mid-month.
  • Prevent disputes — a transparent daily rate and per-month breakdown show exactly how the total was calculated, before the invoice goes out.
  • Handle any date range — one partial month or a range spanning several months — the statement itemizes every segment and totals it automatically.

For tenants

  • Pay only for days occupied — no more paying a full month for a move-in on the 20th — the bill covers exactly the days you live there.
  • Check the math — verify a landlord's or property manager's proration against an independent calculation before you pay.
  • Keep a record — print the statement or save it as a PDF to attach to payment discussions or your own files.

FAQ

Prorated Rent Calculator FAQs

Do landlords have to prorate rent?
In most places no law requires it unless the lease says so, but it is standard practice for mid-month move-ins and move-outs. Offering prorated rent lets a tenant start as soon as the unit is ready instead of waiting for the 1st — which reduces vacancy for the landlord and keeps the first bill fair for the tenant.
How do I calculate prorated rent for a move-in?
Divide the monthly rent by the number of days in that month to get the daily rate, then multiply by the days from the move-in date to the end of the month. For example, $1,800 rent in a 30-day month is $60 per day; moving in on the 21st gives 10 occupied days, so the prorated rent is $600. Enter your dates above and the calculator does this for every month in the range.
How do I prorate rent when a tenant is moving out?
Use the same formula: daily rate (monthly rent ÷ days in the month) multiplied by the days occupied, counting from the 1st of the month through the move-out date. A tenant paying $1,800 who leaves on the 15th of a 30-day month owes $60 × 15 = $900 for the final month. Set the move-out date above and the statement builds itself.
What is the difference between the actual-days and flat 30-day method?
The actual-days method divides rent by the real number of days in each month (28 through 31), so the daily rate changes slightly from month to month. The flat 30-day method always divides by 30, keeping one consistent daily rate all year — a common landlord shortcut. The difference is usually only a dollar or two per day; use whichever method your lease specifies.
Does the move-in or move-out day count?
Yes. This calculator counts both the move-in and move-out dates as occupied (inclusive), which is the convention most landlords use. Moving in on the 21st of a 30-day month means 10 billable days: the 21st through the 30th.
Can I prorate rent across multiple months?
Yes — that is where this calculator stands out. Pick any move-in and move-out pair, even months apart, and the statement splits the range into per-month segments, applies the right day count and daily rate to each, and totals everything on one printable statement.
Do I still pay a full security deposit if rent is prorated?
Typically yes. Proration applies to monthly rent only — security deposits, pet fees, parking and other fixed charges are normally due in full at lease signing regardless of the move-in date.
Which proration method should my lease use?
Whichever one your lease specifies — that wording governs. If the lease is silent, the actual-days method is the most common convention because it matches the real calendar. Landlords who prefer one stable daily rate for bookkeeping often choose the flat 30-day method instead.
Is this prorated rent calculator really free?
Yes. There is no signup, no paywall and no usage limit. Every calculation runs locally in your browser — nothing about your rent or dates is uploaded — and you can print the statement or save it as a PDF for free.