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Move in on the 14th, pay for 17 days. Not 30.
Mid-month move-ins mean partial rent, and the proration method matters more than people think — actual-days and 30-day-month conventions disagree by real money in February. This calculator shows both so tenants know what is fair and landlords charge what the lease says.
Tenants use it to check a mid-month move-in quote before paying; landlords use it to charge the lease-specified method and end the argument with arithmetic. It settles the February discrepancy that calculators using 30-day months get wrong.
Whichever the signed lease says — both are legal in most states. Actual-days (rent ÷ days in the month) is the fairest and most common; the banker's 30-day month is simpler but overcharges in February and undercharges in 31-day months. Some states mandate a specific method, so landlords should check local law.
Conventionally yes — you pay from the day you get the keys. This calculator includes the move-in day. If your lease says occupancy starts the following day, subtract one day from the result.
No — deposits are fixed (typically one month's rent) regardless of move-in day. Only rent prorates. Budget first month as: prorated rent + full deposit + any pet or admin fees.