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Free Lien Calculators and Tools
Single-purpose tools for contractors, subcontractors and suppliers. Each one works in your browser, with no account needed, and keeps your project dates on your own device.
How Long to File a LienDeadlines by state, role and project type, including public and federal (Miller Act) jobs.Mechanics Lien Deadline CalculatorEvery lien, notice and bond-claim date for your project, all 50 states.Preliminary Notice Deadline CalculatorWhen your preliminary notice is due, from your first day on the job.Retainage CalculatorRetainage held, payment due now and balance to finish on a pay application.Lien Waiver PickerConditional or unconditional, progress or final: which waiver fits this payment.
Lien deadlines by stateRule tables and a calculator for each of the 50 states.
License & bond renewal lookupYour real license, bond and insurance expiration dates.
Free lien templatesFillable PDF waivers, notices and demand letters.
These tools give estimates, not legal advice. Lien law has exceptions by role and project type; verify with the statute or a construction attorney.
Track your projects in LienWarden. LienWarden keeps every lien, notice and bond-claim date for your projects in one place. Your first project is free and you can start without an account.