Prorated Rent Calculator
Calculate the exact partial-month rent due for move-in or move-out dates. Supports exact calendar month days, flat 30-day rules, and annual daily rates.
| Full Monthly Rent | $2,100.00 / mo |
| Days in Calendar Month | 31 Days |
| Occupied Days in Period | 18 Days |
| Unoccupied Rent Savings | $880.65 saved |
What is Prorated Rent and When is It Used?
Prorated rent is the fractional amount of rent charged when a tenant moves into or moves out of a rental unit in the middle of a billing cycle, rather than on the standard first day of the month.
Instead of paying for the entire 30 or 31 days, the tenant only pays for the exact number of days they occupy and have access to the home.
The Mathematics of Prorated Rent
Here are the primary formulas used by property managers to calculate daily and prorated rent:
Daily Rent ($/day) = Monthly Rent / Days in that Specific Month (28, 29, 30, or 31)
Prorated Rent ($) = Daily Rent * Number of Occupied Days
Method 2 (Flat 30-Day Banker's Rule):
Daily Rent ($/day) = Monthly Rent / 30
Prorated Rent ($) = Daily Rent * Number of Occupied Days
Method 3 (Annual 365-Day Formula):
Daily Rent ($/day) = (Monthly Rent * 12) / 365
Prorated Rent ($) = Daily Rent * Number of Occupied Days
Step-by-Step Worked Calculation Example
Suppose your rent is $2,100 per month and you move in on October 14th (a 31-day month):
- Determine occupied days: From October 14th through October 31st inclusive is
31 - 14 + 1 = 18 occupied days. - Calculate daily rate:
$2,100 / 31 days = $67.7419 per day. - Multiply daily rate by occupied days:
$67.7419 * 18 days = $1,219.35. - Amount saved by not living there the first 13 days:
$2,100.00 - $1,219.35 = $880.65.
Master Daily Rent Rate Reference Table
Look up common monthly rent amounts to view your exact daily rental rates across different month lengths:
| Monthly Rent | 31-Day Month (Jan, Mar, Oct...) | 30-Day Month (Apr, Jun, Sep...) | 28-Day Month (February) | Annual 365 Average |
|---|---|---|---|---|
| $1,000 / mo | $32.26 / day | $33.33 / day | $35.71 / day | $32.88 / day |
| $1,500 / mo | $48.39 / day | $50.00 / day | $53.57 / day | $49.32 / day |
| $2,100 / mo | $67.74 / day | $70.00 / day | $75.00 / day | $69.04 / day |
| $2,500 / mo | $80.65 / day | $83.33 / day | $89.29 / day | $82.19 / day |
| $3,000 / mo | $96.77 / day | $100.00 / day | $107.14 / day | $98.63 / day |
| $3,500 / mo | $112.90 / day | $116.67 / day | $125.00 / day | $115.07 / day |
| $4,000 / mo | $129.03 / day | $133.33 / day | $142.86 / day | $131.51 / day |
Move-In vs Move-Out Proration Rules
- Move-In Proration: Calculated from your official move-in date through the final calendar day of that month. You count the move-in day because you receive the keys on that date.
- Move-Out Proration: Calculated from the 1st day of the month through your final move-out day. If you surrender keys on June 10th, you pay for exactly 10 days of rent in June.
- Check Your Lease Agreement: Most residential leases specify whether the landlord uses the Exact Days method or the 30-day Banker's Rule. Always verify which method is written into your contract.
5 Tips for Tenants & Landlords
Frequently Asked Questions
Divide your full monthly rent by the number of days in that specific month to find your daily rent rate, then multiply by the number of days you will occupy the apartment. Formula: Prorated Rent = (Monthly Rent / Days in Month) * Occupied Days.
Yes. The tenant has legal possession and access to the property on the move-in day, so the move-in date is always included as an occupied day.
While not universally mandated by federal law, proration is the standard real estate industry practice across all 50 states. Most state landlord-tenant laws prevent landlords from collecting full rent for days an apartment was not made available.
February has 28 days. From February 15th through February 28th is 14 days (28 - 15 + 1 = 14). You would pay exactly 14/28ths (50%) of your normal monthly rent.
Yes. Flat-rate utility charges (such as fixed trash or internet fees) are prorated using the exact same daily formula as the base rent.