Prorated Rent Calculator

Clear day-by-day proration

See the day count behind your rent estimate

Pick a move-in or move-out date, confirm how the lease counts that date, and compare the dates counted in this scenario with the formula and amount.

Display currencyChanges the symbol only; values are not converted.

Your inputs

Set the partial-rent period

3 short steps

1What are you prorating?

Moving inEstimate from the selected date to month-end.Moving outEstimate from the first of the month to the selected date.

Enter the rent and dateWe count the calendar days for you.

Monthly base rentBase rent only—do not add the deposit or one-time fees here.Move-in dateThe calendar handles 28-, 29-, 30-, and 31-day months.

Count the move-in date in this estimateChecked by default. Change this only if the lease or written agreement excludes that date.

21 calendar dates countedJune 10–30 · 9 dates not counted in this scenario.

Charged days used in the formula

Auto from dates

Auto-filled from the highlighted dates. Edit this whole-day count only when the lease or written agreement counts chargeable days differently.

3Which daily-rate method does the lease use?

Actual days in monthMonthly rent ÷ 28, 29, 30, or 31 calendar days.Fixed 30-day methodMonthly rent ÷ 30, even when the month is longer or shorter.Annual 365-day methodMonthly rent × 12 ÷ 365, then multiplied by charged days. The divisor stays 365 in leap years.

Use the method written in the lease or required by the applicable rule; this tool does not choose the legal method. The numerator is the confirmed charged-day count above, while the calendar shows the selected date range.

Add move-in costsOptional · kept separate from rent

Security deposit (optional)Shown in total move-in cash, never in prorated base rent.Other one-time costs (optional)For example, a one-time key or agreed move-in charge.

Your result

Partial-rent breakdown

June 2026

Prorated base rent$840.00

21 charged days using monthly rent ÷ actual 30-day month.

Calculation

$1,200.00 monthly rent30 days21 charged days$840.00

The unrounded daily rate is used before the final amount is rounded to cents.

Prorated days: 21
Rent per day: $40.00
Reference period charged: 70%

Charge calendar

June 2026

21 dates counted

June 10–30Daily-rate basis: 30-day calendar month. The formula uses the highlighted date count.

SunMonTueWedThuFriSat123456789101112131415161718192021222324252627282930

Counted in estimate21 calendar dates
Not counted in scenario9 calendar dates
Move-inDate is counted

Move-in cash breakdown

Rent and other charges stay separate

Prorated base rent: $840.00
Security deposit: $0.00
Other one-time costs: $0.00
Total move-in cash: $840.00

Deposit and one-time costs are added only to this cash total; they do not change the daily rent rate.

See calculation steps and assumptions

Use only the daily-rate convention explicitly selected by the user.Monthly rent ÷ actual 30-day month
Divide the matching monthly or annual rent by the selected reference-period day count without intermediate rounding.daily rent = 1200 ÷ 30 = 40
Multiply the daily rate by the explicit charged-day count.prorated rent = 40 × 21 = 840

This calculator does not decide whether rent should be prorated, which days are chargeable, or which method a jurisdiction requires. Use the lease, written agreement, and applicable local rules.
Actual-calendar-day mode requires the real 28–31 day count for the billing month. Fixed-30 mode uses 30 even when the calendar month differs. Annual mode uses the entered annual rent divided by 365 and does not model leap-day terms.
Raw calculations are not rounded between steps; displayed currency follows the declared display-only rounding policy.

Formula finance.prorated-rent.v1, version 1.0.0. Values are calculated without intermediate rounding.

Count the dates. Confirm whether the selected move-in or move-out date is included in this estimate.

Choose the denominator. Actual-month, fixed-30, and annual-365 methods can produce different rent.

Keep costs separate. Deposits and one-time charges belong in move-in cash, not the daily rent rate.

Partial-period lease ledger

Prorate Rent With the Lease's Day-Count Rule Made Explicit

Partial-month rent can differ under actual-days, fixed 30-day, or other contractual conventions. This calculator shows the selected method, included occupancy dates, and separate charges so the result can be compared with the lease rather than presented as a universal legal rule.

Key ideas · Partial-period lease ledger

Key ideas in Prorate Rent With the Lease's Day-Count Rule Made Explicit

Actual-days method: monthly rent ÷ calendar days in month × chargeable occupancy days
Alternative method: A lease may instead specify 30 days, daily rent, or another jurisdictional convention.
Authority boundary: The signed lease and applicable local law determine the enforceable charge.

Prorated rent: identify the governing day-count convention
Read the lease, addenda, written move-in agreement, and applicable local requirements before choosing a denominator. HUD model-lease instructions illustrate actual calendar days for a particular assisted-housing setting, but that example does not create a nationwide rule for private rentals. Some agreements use 30 days, a stated daily amount, or a different treatment for concessions. Record the method and source beside the result so two plausible calculations are not mistaken for one legally required answer.
Prorated rent: count chargeable occupancy dates consistently
State whether the move-in day, move-out day, or both are chargeable and count dates accordingly. February, leap years, and 31-day months change an actual-days denominator. Avoid calculating from nights in one place and calendar days in another. If possession was delayed, the unit was unavailable, or keys were returned at a disputed time, preserve the evidence and request a written allocation rather than changing dates to force an expected amount. The tool cannot resolve a possession dispute.
Prorated rent: separate base rent from deposits and recurring fees
Prorate only categories the agreement says are time-based. Security deposits, application charges, pet deposits, utility allocations, parking, concessions, and one-time move-in fees may follow different rules. Use the Cost of Living Calculator for location-level expense context and the Salary Calculator only for a clearly defined pay conversion. A partial-period invoice should show each component rather than burying non-rent items in one daily rate.
Prorated rent: verify the counterparty and payment request
The FTC warns that rental-listing scams often pressure prospective tenants to send money before seeing the property or verifying the owner. Confirm the property, landlord or authorized agent, signed agreement, payment destination, and receipt process through trusted channels. Compare the requested amount with the documented proration and ask for corrections in writing. Do not send wire, gift card, cryptocurrency, or other hard-to-recover payment merely because a calculated amount looks plausible.
Prorated rent: retain a reproducible partial-month statement
Save monthly base rent, selected denominator, chargeable first and last date, counted days, credits, separate fees, and the final arithmetic. For a cash-flow view, place the move-in amount alongside the Living Expenses Calculator without converting one-time deposits into recurring rent. This page does not determine tenant rights, habitability remedies, refund entitlement, or local notice rules. For a disagreement, consult the lease, housing agency, tenant-landlord resource, or qualified local counsel as appropriate.

Prorate Rent With the Lease's Day-Count Rule Made Explicit: Partial-month rent can differ under actual-days, fixed 30-day, or other contractual conventions. This calculator shows the selected method, included occupancy dates, and separate charges so the result can be compared with the lease rather than presented as a universal legal rule.

Prorated rent: identify the governing day-count convention

Read the lease, addenda, written move-in agreement, and applicable local requirements before choosing a denominator. HUD model-lease instructions illustrate actual calendar days for a particular assisted-housing setting, but that example does not create a nationwide rule for private rentals. Some agreements use 30 days, a stated daily amount, or a different treatment for concessions. Record the method and source beside the result so two plausible calculations are not mistaken for one legally required answer.

Prorated rent: count chargeable occupancy dates consistently

State whether the move-in day, move-out day, or both are chargeable and count dates accordingly. February, leap years, and 31-day months change an actual-days denominator. Avoid calculating from nights in one place and calendar days in another. If possession was delayed, the unit was unavailable, or keys were returned at a disputed time, preserve the evidence and request a written allocation rather than changing dates to force an expected amount. The tool cannot resolve a possession dispute.

Prorated rent: separate base rent from deposits and recurring fees

Prorate only categories the agreement says are time-based. Security deposits, application charges, pet deposits, utility allocations, parking, concessions, and one-time move-in fees may follow different rules. Use the Cost of Living Calculator for location-level expense context and the Salary Calculator only for a clearly defined pay conversion. A partial-period invoice should show each component rather than burying non-rent items in one daily rate.

Prorated rent: verify the counterparty and payment request

The FTC warns that rental-listing scams often pressure prospective tenants to send money before seeing the property or verifying the owner. Confirm the property, landlord or authorized agent, signed agreement, payment destination, and receipt process through trusted channels. Compare the requested amount with the documented proration and ask for corrections in writing. Do not send wire, gift card, cryptocurrency, or other hard-to-recover payment merely because a calculated amount looks plausible.

Prorated rent: retain a reproducible partial-month statement

Save monthly base rent, selected denominator, chargeable first and last date, counted days, credits, separate fees, and the final arithmetic. For a cash-flow view, place the move-in amount alongside the Living Expenses Calculator without converting one-time deposits into recurring rent. This page does not determine tenant rights, habitability remedies, refund entitlement, or local notice rules. For a disagreement, consult the lease, housing agency, tenant-landlord resource, or qualified local counsel as appropriate.

Important limitations

Prorated Rent Calculator uses the rates, dates, fees, and assumptions entered or explicitly cited by this formula. It does not replace a current quote, eligibility decision, filing calculation, contract, or professional financial advice.

Review the stated scope, calculation method, assumptions, supported inputs, and effective dates, and obtain qualified advice before using a high-stakes result.

This formula passed its registered engineering tests and is published under an explicit site-owner policy authorization. No independent expert, QA, editorial, legal, or third-party review is claimed. Verify consequential results with a qualified professional.

This subject may affect health, finance, tax, legal, or other consequential decisions. It has not received an independent domain-expert review; consult a qualified professional before relying on it.

Partial-period lease ledger

Prorate Rent With the Lease's Day-Count Rule Made Explicit

Key ideas · Partial-period lease ledger

Key ideas in Prorate Rent With the Lease's Day-Count Rule Made Explicit

Actual-days method: monthly rent ÷ calendar days in month × chargeable occupancy days
Alternative method: A lease may instead specify 30 days, daily rent, or another jurisdictional convention.
Authority boundary: The signed lease and applicable local law determine the enforceable charge.

Prorated rent: identify the governing day-count convention
Read the lease, addenda, written move-in agreement, and applicable local requirements before choosing a denominator. HUD model-lease instructions illustrate actual calendar days for a particular assisted-housing setting, but that example does not create a nationwide rule for private rentals. Some agreements use 30 days, a stated daily amount, or a different treatment for concessions. Record the method and source beside the result so two plausible calculations are not mistaken for one legally required answer.
Prorated rent: count chargeable occupancy dates consistently
State whether the move-in day, move-out day, or both are chargeable and count dates accordingly. February, leap years, and 31-day months change an actual-days denominator. Avoid calculating from nights in one place and calendar days in another. If possession was delayed, the unit was unavailable, or keys were returned at a disputed time, preserve the evidence and request a written allocation rather than changing dates to force an expected amount. The tool cannot resolve a possession dispute.
Prorated rent: separate base rent from deposits and recurring fees
Prorate only categories the agreement says are time-based. Security deposits, application charges, pet deposits, utility allocations, parking, concessions, and one-time move-in fees may follow different rules. Use the Cost of Living Calculator for location-level expense context and the Salary Calculator only for a clearly defined pay conversion. A partial-period invoice should show each component rather than burying non-rent items in one daily rate.
Prorated rent: verify the counterparty and payment request
The FTC warns that rental-listing scams often pressure prospective tenants to send money before seeing the property or verifying the owner. Confirm the property, landlord or authorized agent, signed agreement, payment destination, and receipt process through trusted channels. Compare the requested amount with the documented proration and ask for corrections in writing. Do not send wire, gift card, cryptocurrency, or other hard-to-recover payment merely because a calculated amount looks plausible.
Prorated rent: retain a reproducible partial-month statement
Save monthly base rent, selected denominator, chargeable first and last date, counted days, credits, separate fees, and the final arithmetic. For a cash-flow view, place the move-in amount alongside the Living Expenses Calculator without converting one-time deposits into recurring rent. This page does not determine tenant rights, habitability remedies, refund entitlement, or local notice rules. For a disagreement, consult the lease, housing agency, tenant-landlord resource, or qualified local counsel as appropriate.