Payment Deadline Calculator
A payment deadline is your invoice date plus your contract's payment terms, most often Net 30. If the contract is silent, your state's prompt-payment statute sets a default, typically 30 days on private work and 7 to 30 days on public work. Enter your invoice date and terms below for the exact due date.
When is your invoice actually due?
Invoice terms
Use the date the invoice or pay application was issued, not the date you received it.
Pick the term in your contract. Most state prompt-payment statutes default to Net 30 for private work if the contract is silent.
Payment deadline
30 days remaining
Invoice date
Fri, Oct 23, 2026
Payment due
Sun, Nov 22, 2026
Net 30 from invoice date
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Math runs in your browser until you ask for the email. The deadline above reflects the contract terms you entered, not the state prompt-payment statute. State law sometimes overrides the contract, so see the reference table below.
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Create a project, add a subcontractor, send the statutory form for the project's state, and watch the sub sign on their phone with no account.
How do payment terms work in construction?
Every construction invoice carries a payment deadline. Net 30 is the most common. It means the paying party has 30 calendar days from the invoice date to release the money. Net 45, Net 60, and Net 90 stretch the same idea. Net 7 and Net 14 show up on short-term subcontracts or supplier deliveries where the credit risk is smaller.
Two clocks run side by side. The first is the contract clock, the terms you signed up for. The second is the state prompt-payment statute. The statute kicks in when the contract is silent, or when the contract pushes payment further than the state allows. Most states default to a 30-day window for private work and 7 to 30 days for public work, with interest accruing once the deadline passes.
Once a payment goes past due, the calculus shifts. State law usually lets you bill interest, file a mechanic's lien notice on a separate clock, and stop work in some cases. The calculator above tells you which side of the deadline you are on so you can act before the lien window closes.
State prompt-payment defaults
A quick reference for the five highest-traffic states on LienDone. Each one's statute page has the full citation and the lien-filing deadlines that follow.
| State | Default terms | Details |
|---|---|---|
| California | Net 30 (private, statute default) | Civ. Code §3260: 7 days after retention is released for subs. |
| Texas | Net 30 (private, statute default) | Property Code §28.002, owner to contractor: 35 days; contractor to sub: 7 days after receipt. |
| Florida | Net 30 (private, statute default) | Local Government Prompt Payment Act: 25 days on most public projects. |
| New York | Net 30 (private, statute default) | State Finance Law §139-f: 30 days after acceptance of work on public contracts. |
| Arizona | Net 30 (private, statute default) | A.R.S. §32-1129.01: 7 days for contractor to pay sub after contractor receives payment. |
The notes above are summaries. The exact deadline depends on the tier in the payment chain and whether the project is public or private. Click a state name for the full guide.
When does a missed deadline turn into a lien?
A single late payment is annoying. A second one in a row is a signal. Most state lien statutes give you a finite window from the last day of labor or material delivery (often 60, 90, or 120 days) to file a mechanic's lien. Burning months on friendly reminders eats that window.
The cleanest pattern: send the demand the day after the deadline passes, with the statute citation in the subject line. If nothing changes within two weeks, get the preliminary notice or lien filing started. The lien-waiver-before-payment trap works in reverse here. Never release lien rights for a payment that has not cleared.
Common questions
Net 30 means the payment is due 30 calendar days after the invoice date. Net 14, Net 45, Net 60, Net 75, and Net 90 follow the same pattern. The clock starts on the invoice date, not the date the paying party received the invoice, unless the contract says otherwise.
Prompt payment rules in the biggest markets
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