Free calculator
Rental listing break-even calculator
Compare a leasing promotion or incentive cost with the daily rent lost to vacancy. The result is your own break-even arithmetic.
The short answer
Last updated: July 2026
A rental listing promotion breaks even when the cost equals the rent saved by filling a unit sooner. Divide the promotion or incentive cost by daily rent (monthly rent × 12 ÷ 365) to estimate the vacancy days it would need to avoid. This tool does not predict lease-up speed.
After the estimate:
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Compare the fixed cost of a listing promotion or leasing incentive with the rent lost during vacancy, using the rent and days you enter.
Monthly rent
$
Promotion or incentive cost
$
Days vacant without it
days
Input-driven result
Your inputs
Formula
Result below
Vacancy days needed to break even
6.1 days
$380 cost ÷ $62 daily rent. 14 vacant days would mean about $1,255 in lost rent plus the cost.
Estimate based on your inputs. Not a promise of results.
Estimate only. It does not predict whether a promotion will lease a unit faster or account for screening quality, concessions, carrying costs, or fair-housing obligations.
How it works
How this tool works.
A promotion can be cheaper than leaving a unit empty, but only if it meaningfully shortens the vacancy. The useful question is how many vacant days the expense has to prevent.
This calculator translates a fixed promotion or incentive cost into that break-even day count using your own rent.
Make the result useful
Ask how many vacant days the spend must avoid
A listing promotion or incentive has a clear rent-only break-even: its cost divided by daily rent. That makes the lease-up assumption explicit.
It cannot prove that a promotion will work; use it to bound a decision, not to promise a result.
Does this predict faster leasing?
No. It only calculates the threshold.
Does it include carrying costs?
No. Add them separately if relevant.
Questions landlords ask
Questions about this tool and its limits.
Built by a landlord who's done every one of these jobs by hand.
Aptoria was built by an owner-operator managing a Brooklyn portfolio — the 11pm calls, the awkward rent texts, the April receipt-pile — not by a software team guessing at the problem.
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