2026 US Rental Standard • 50 States Compliant

Prorated Rent Calculator

Accurately calculate prorated rent for mid-month move-ins or move-outs. Features interactive calendar visualization, statutory state compliance, and printable landlord/tenant lease vouchers.

Calculate Prorated Rent

Enter your monthly rent and occupancy dates to calculate exact daily prorations.

Actual Days (Most Common)
$
Calculated Amount Actual Days Formula
Total Prorated Rent Due
$750.00
Apportioned for occupied tenancy period
Daily Rent Rate $50.00 / day
Billable Tenancy 15 / 30 Days
Monthly Savings $750.00
Statutory Status Compliant
Tenancy Calendar
Occupied (Billed) Vacant (No Rent)
SunMonTueWedThuFriSat

Comparison of 4 US Rent Proration Methods

Depending on your lease agreement, landlords typically calculate daily rent using one of four mathematical conventions.

Calculation Method Formula Best Used For Feb Impact 31-Day Impact
Actual Days in Month (Recommended) Rent ÷ Exact Days in Month Standard residential leases in 50 states Higher daily rate ($/28) Lower daily rate ($/31)
Banker's 30-Day Rule Rent ÷ 30 Corporate leases, financial amortization Standardized Standardized
365-Day Year (Annual) (Rent × 12) ÷ 365 Institutional property management (Greystar, Avalon) Uniform year-round Uniform year-round
360-Day Commercial Year (Rent × 12) ÷ 360 Commercial retail & office leases Strictly 30/360 Strictly 30/360

Rent Proration Laws by State

State statutory guidelines, legal notice requirements, and tenant protection codes.

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Calculate by Specific Number of Days

Instant lookup tables and calculation breakdowns for exact tenancy periods.

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The Complete Landlord & Tenant Guide to Prorated Rent

What is Prorated Rent?

Prorated rent is the fractional amount of rent charged when a tenant occupies a rental unit for only a portion of the standard monthly billing cycle. Most residential leases in the United States operate on a calendar month schedule (the 1st through the 30th or 31st). If a tenant takes possession on the 12th or vacates on the 20th, charging a full month's rent is unfair and often legally prohibited. Prorated rent ensures the tenant pays strictly for the exact calendar days they hold the keys and enjoy legal possession.

When is Rent Proration Legally Required?

  • Mid-Month Move-In: When a tenant's lease starts on any date other than the 1st of the month. Landlords commonly collect the prorated amount upon move-in or apply it to the second month.
  • Mid-Month Move-Out: When a month-to-month tenancy ends with a legally compliant 30-day notice that expires mid-month.
  • Early Lease Terminations: When both parties agree to mutual lease cancellation or military relocation under the Servicemembers Civil Relief Act (SCRA).
  • Uninhabitability Abatement: If a rental property becomes partially or completely uninhabitable due to plumbing failure, fire, or lack of heating, courts often order rent prorated for the lost days.

How Do You Calculate Prorated Rent? (Step-by-Step)

Real-World Case Study:

Scenario: Jane signs a lease for a modern 2-bedroom apartment in Austin, Texas. Her monthly rent is $1,850. Her lease commences on October 14th.

  1. Determine Days in the Month: October has 31 days.
  2. Calculate Days Occupied: From October 14 through October 31 inclusive = 31 - 14 + 1 = 18 days.
  3. Determine Daily Rate: $1,850 ÷ 31 = $59.6774 per day.
  4. Multiply by Days Occupied: 18 × $59.6774 = $1,074.19.

Total Prorated Rent Due: $1,074.19

Frequently Asked Questions About Prorated Rent

Authoritative answers reviewed against US tenant-landlord statutes.

It depends on the landlord's policy stated in your lease agreement. Many institutional property managers require the full first month's rent plus security deposit at move-in for screening security, and then apply the prorated credit to the second month. However, independent private landlords frequently charge the prorated amount directly on move-in day. Always verify your specific lease terms.

Yes. In all 50 states, the moment legal possession transfers (you receive keys and access rights), that day is billed as a full day of tenancy, regardless of whether you move in at 9:00 AM or 8:00 PM.

Under the standard "Actual Days" formula, your daily rate in February will be slightly higher (e.g. $1,500 / 28 = $53.57/day) than in a 31-day month like March ($1,500 / 31 = $48.38/day). If you prefer a consistent rate, ask your landlord if they permit the Banker's 30-day or Annual 365-day calculation.

If you have a fixed-term 12-month lease ending on June 30th and choose to leave on June 15th voluntarily without landlord agreement, the landlord is generally entitled to the full month's rent. However, under month-to-month leases with proper statutory notice (e.g., California Civil Code § 1946.1), rent is legally apportionable through the notice expiration date.