Free calculator
Lease notice timing calculator
Subtract your chosen notice lead time and preparation days from days remaining until lease expiry.
The short answer
Last updated: July 2026
Lease notice timing equals days until expiry minus your planned notice lead time and preparation days. This calculator is planning math only; local notice requirements and lease terms control actual timing.
After the estimate:
Join the waitlistLease notice timing calculator
Plan when to begin a lease-renewal process.
Subtract your chosen notice lead time and preparation days from days remaining until lease expiry.
Days until lease expiry
days
Notice lead time you plan
days
Preparation days
days
Input-driven result
Your inputs
Formula
Result below
Days until process should start
8 days
75 days to expiry − 60 notice days − 7 preparation days.
Estimate based on your inputs. Not a promise of results.
Planning only, not legal advice. Required notices, delivery methods, and timing vary by lease and jurisdiction.
How it works
How this tool works.
Lease notice timing calculator uses only the values you enter to make a planning calculation visible.
It is an educational worksheet, not a forecast, legal conclusion, or professional recommendation.
Make the result useful
Use timing math to start review early
This planner subtracts the notice lead time and your preparation buffer from the days remaining until lease expiration. A positive result is the number of days before the planned workflow should start; a negative result shows that the chosen window has already begun.
The entered lead time is your input, not a legal rule supplied by the calculator. Verify the lease, current state and local requirements, delivery method, and the facts of the tenancy before sending any notice.
Calculation lens
Days until workflow start = days until expiry − notice lead time − preparation days
The result is a planning interval, not a compliant notice date or legal deadline.
Does not determine the legally required notice, service method, renewal right, or valid termination date.
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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