Invoice Due Date Calculator

Enter your invoice date and payment terms to instantly find the due date, days remaining, and payment status — no calendar counting needed.

Invoice Details

Invoice Date

Payment Terms

Custom Payment Term (Days)

Payment Due Date

Invoice Due Date

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Invoice Date Due Date

Payment Terms

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selected terms

Days Until Due

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from today

Invoice Status

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payment status

Understanding Payment Terms

What Does "Net 30" Mean?

"Net 30" means the client has 30 calendar days from the invoice date to make full payment. Net 15, Net 45, and Net 60 work the same way — the number is simply the number of days allowed.

Due Date = Invoice Date + Term Days

Due on Receipt

"Due on Receipt" means payment is expected immediately upon receiving the invoice — the due date is the same as the invoice date. This is common for one-time projects, deposits, and clients with a history of late payment.

Due Date = Invoice Date (0 days)

Cash Flow Impact of Long Terms

Net 60 and Net 90 terms mean you can wait up to 3 months to get paid for work you've already completed. This puts pressure on your working capital and can force you to turn down new work while waiting for old invoices to clear.

Cash Gap = Term Days + Collection Delay

What Happens When Overdue?

An overdue invoice doesn't just delay cash — it signals a potential collection problem. Send a polite reminder within 1–3 days of the due date. After 14 days overdue, escalate with a formal notice. After 30 days, consider adding a late fee.

Overdue = Today > Due Date

Common Payment Terms Reference

Term	Days to Pay	Best Used For
Due on Receipt	0 days	Deposits, new clients, high-risk projects
Net 7	7 days	Freelance work, small deliverables, retainers
Net 15	15 days	Service businesses, fast-turnaround projects
Net 30	30 days	Standard B2B terms, most common in the US
Net 45	45 days	Mid-size company procurement cycles
Net 60	60 days	Large corporations, government contracts
Net 90	90 days	Enterprise clients, negotiated vendor terms

How to get invoices paid faster

Send invoices immediately. Every day you delay sending the invoice is a day added to when you get paid. Invoice the moment the work is delivered or the milestone is hit.
Use shorter terms by default. Net 30 is standard, but Net 15 or Net 7 is perfectly reasonable for small service businesses. Many clients will pay within your terms if you simply ask.
Include a late payment fee clause. A 1.5% monthly fee on overdue balances is standard in the US and gives clients a financial incentive to pay on time. Include it on the invoice and in your contract.
Offer multiple payment methods. ACH transfers, credit card, and Zelle reduce friction. The easier it is to pay, the faster you get paid. Don't make clients jump through hoops.
Follow up before the due date. A friendly "just checking in" message two to three days before the deadline catches issues before they become overdue problems.

Frequently Asked Questions

Standard Net terms (Net 30, Net 60, etc.) use calendar days — not business days. This calculator uses calendar days to match standard US invoicing practice. If your contract specifies business days, adjust accordingly by adding weekends and holidays to your count.

For new clients with no track record, start with shorter terms — Net 7, Net 15, or Due on Receipt with a deposit. You can always extend terms to Net 30 once you've established trust and confirmed they pay reliably. It's much easier to loosen terms later than to tighten them.

Yes, provided it's disclosed in advance — either on the invoice itself or in your contract. A typical late fee is 1.5% per month (18% annually) on the unpaid balance. Some states have maximum allowable late fee rates, so check your local regulations. Always include your late fee policy before starting work, not after an invoice goes overdue.

The invoice date is when you issue the invoice — it starts the payment clock. The due date is the deadline calculated by adding your payment terms to the invoice date. The payment date is when the client actually pays. You want the payment date to be on or before the due date.

Only if your cash flow can handle the gap. Net 60–90 is common with enterprise and government clients but can strain a small business. Options include: requiring a 50% deposit upfront, offering a small early-payment discount (e.g. 2/10 Net 60 — 2% discount if paid within 10 days), or factoring the invoice through a receivables financing service. Never accept long terms that would force you to miss payroll or turn down other work.