Payment Terms Calculator
Price the terms you grant your customers, work out what each extra day costs, and find the largest early-payment discount worth offering.
Payment Terms Calculator
Results recalculate instantly on every keystroke. Nothing you type is transmitted.
What this result does not account for
- Assumes customers pay exactly to terms; actual collection usually runs longer.
- Treats revenue as evenly distributed across the year.
- Does not model the sales benefit that longer terms may generate.
In short: At $2,400,000 of revenue, every day of payment terms ties up $6,575.34. Moving from net 45 to net 30 releases $98,630.14 of cash. Offering 2% to be paid 35 days early costs 21.28% annualised, against a defensible ceiling of just 1.044%.
Formula
The breakeven discount inverts the annualised cost formula. Feeding 37.24% back into it returns exactly 2.000%, which is the standard 2/10 net 30 offer.
Worked Example
- Find the daily revenue. $2,400,000 ÷ 365 is $6,575.34 — the cash tied up by a single day of payment terms.
- Size the receivable at each term. Net 45 holds $295,890.41; net 30 holds $197,260.27. The difference is 15 days of revenue.
- Value the change. Shortening from net 45 to net 30 releases $98,630.14 of cash, saving $10,849.32 a year at 11%.
- Price the discount you offer. 2% to be paid 35 days early is 21.28% annualised — nearly twice the cost of simply borrowing.
- Find the ceiling. At an 11% cost of capital the largest defensible discount over that window is 1.044%.
The breakeven discount is the output most businesses have never calculated. At the default terms here, offering 2% to be paid 35 days early costs 21.28% annualised while the money could be borrowed at 11%, and the largest discount that actually makes sense is 1.044%. Tighten the terms to net 30 and the same 2% offer becomes a 20-day acceleration costing 37.24% annualised against a ceiling of 0.599% — the shorter the window, the more expensive the identical discount becomes, which is the opposite of most people's intuition. That 37.24% is the figure the payables side of this site reports for taking a supplier's 2/10 net 30, and it is an excellent deal in that direction precisely because it is such a poor one in this direction. The convention persists because the headline number looks trivial and nobody annualises it.
Strengths & Limits Of This Model
Where this engine is strong
- Prices a day of terms in both cash and annual financing cost.
- Solves for the breakeven discount rather than only assessing a given one.
- Reconciles exactly with the payables side of the same arithmetic.
Where it stops
- Cannot model customer-by-customer terms or mixed uptake.
- Ignores the competitive necessity that sometimes dictates terms.
Practical Use Cases
Pricing a customer's demand for longer terms
Thirty extra days costs $19,726.03 a year to finance here. Quote terms and price together, never separately.
Building the case for shorter standard terms
Fifteen days releases $98,630.14 immediately. Check where collection actually sits with the Accounts Receivable Turnover Calculator.
Deciding whether to offer an early payment discount
Compare the annualised cost to your cost of capital. At 37.24% against 11% the answer is usually no.
Understanding the same trade from the buying side
Taking a supplier discount is the mirror image. The Accounts Payable Turnover Calculator works it from the payables end.
Methodology & Editorial Standards
Payment terms are financing, and the engine prices them as such. Daily revenue establishes what a single day of credit costs in cash, receivables are sized at both the current and proposed terms, and the difference is reported as a one-off cash release or consumption together with its permanent annual financing effect at the user's cost of capital. The early payment discount is assessed with the standard annualisation, the discount divided by the net amount retained, scaled by the number of periods the acceleration represents in a year — the same formula the payables side of this site applies to supplier discounts, here inverted to the seller's position. The engine then solves that formula backwards for the discount at which the annualised cost exactly equals the cost of capital, which gives the largest discount worth offering and is the output that most often surprises. The algebra is exact and closes the loop in both directions: feeding a 37.24% cost of capital into the breakeven returns precisely the 2.000% discount of the conventional 2/10 net 30 offer. Terms are treated throughout as a pricing decision rather than an administrative one, since a concession on terms is a discount granted invisibly and never appears in any margin analysis. The engine implements the standard published formula for this calculation. Inputs are validated for domain and sign before evaluation, and any undefined case returns an em-dash rather than a spurious value.
Computation runs in IEEE-754 double precision at full internal precision; rounding to two decimal places occurs strictly at the display layer, so no cumulative drift enters the result. All monetary outputs use accounting presentation — grouped thousands, two decimals, negatives in parentheses — so figures can be transcribed directly into a model or working paper. Division-by-zero and out-of-domain inputs return an em-dash rather than a misleading number.
This engine was reconciled against an independent reference implementation and hand-verified for the worked example above before release. Our full five-stage review process is published on the About Us page.
Disclaimer. This calculator is provided for informational and modelling purposes only and does not constitute financial, tax, legal, medical, or engineering advice. Verify all figures with a qualified professional before acting on them.
Payment Terms Calculator — 20 Expert FAQs
20 analyst-written answers to the questions practitioners actually ask — optimised for voice and answer-engine retrieval.
What does a day of payment terms cost?
$6,575.34 of cash here, and $723.29 a year to finance it at 11%. Multiply by every day you concede.
How much does moving from net 45 to net 30 release?
$98,630.14 — fifteen days of revenue, arriving immediately as a one-off cash inflow.
Is offering an early payment discount worth it?
Rarely. 2% for a 35-day acceleration costs 21.28% annualised against an 11% cost of capital.
What is the largest discount I should offer?
1.044% over a 35-day window at an 11% cost of capital. Above that, borrowing is cheaper.
Why does a small discount cost so much annualised?
Because you give up 2% to accelerate by only weeks. Shorten the window to 20 days and the same 2% costs 37.24%.
Should I extend terms to win a deal?
Only if you price it. Thirty extra days costs $19,726.03 a year here, which often exceeds the margin in dispute.
Are payment terms a pricing decision?
Entirely. A customer demanding net 90 is asking for a discount, and granting it invisibly is worse than pricing it.
What are standard commercial terms?
Net 30 remains the most common, though sectors vary widely and large buyers routinely impose 60 or 90.
Does shortening terms damage relationships?
Less than expected when applied to new business and phased for existing customers. Most buyers pay to whatever terms are set.
What if customers ignore the terms anyway?
Then the issue is collection, not terms. Compare actual days outstanding to the terms you granted.
Is the cash release permanent?
The release is one-off, but the lower financing cost is permanent for as long as the shorter terms hold.
How does this interact with supplier terms?
They offset. What you grant customers and what suppliers grant you together determine the cash conversion cycle.
Should I use 365 or 360 days?
365 for management analysis. Some contracts specify 360, which raises the daily figure by about 1.4%.
Does the discount cost come off margin?
Directly, with no cost saving attached. A 2% discount on all revenue is 2% of revenue straight off operating profit.
What if only some customers take the discount?
The cost scales with uptake, but so does the benefit. The annualised rate per taker is unchanged.
Is factoring cheaper than a discount?
Frequently, yes. Factoring at 15–20% annualised beats a 37.24% discount, which is worth checking before offering terms.
Is this payment terms calculator free to use?
Yes. It is free, requires no account, and has no usage limits. ApexConverter is funded by contextual advertising, never by selling user data.
Is my data sent to a server?
No. The engine runs as Vanilla JavaScript inside your browser under our Zero-Server Client-Side Execution model. Your figures are computed locally and are never transmitted, logged, or stored.
How accurate is this calculator?
It applies the standard closed-form formula in IEEE-754 double precision, rounding only at the display layer. The engine is reconciled against an independent reference implementation before release.
Does it work on mobile?
Yes. The interface is mobile-first with numeric keypad hints and is tested down to a 320-pixel viewport with no horizontal scrolling.