Should You Pay Suppliers Early or Late? A Cash-Based Framework

Whether to pay suppliers early or late is a cash decision with a price on each side: paying early costs you the use of your cash, and paying late costs you fees, goodwill and sometimes supply. The best default is simple. Pay on the due date, not before and not after, and make exceptions only when the numbers or the situation justify it. This framework shows how to price each choice, when to depart from the default and what to do when cash is tight. It builds on days payable outstanding and supports cash flow management.

The default: pay on the due date

Paying exactly when payment is due keeps your cash working as long as the agreement allows, without harming the relationship. Many companies pay earlier than they need to, because invoices are paid when approved, or in a convenient weekly run, or because someone prefers to clear the desk.

The cost is real. For a business with $3,600,000 of annual supplier payments:

• Daily payments = $3,600,000 / 365 = $9,863
• Paying on average 7 days early ties up 7 × $9,863 = $69,041
• At a 9 percent cost of funds, that costs $6,214 a year

The money is not lost, but it is lent to your suppliers for free. That cash could repay debt, avoid borrowing or sit in reserve.

What it costs to pay early

Cost of paying early = Invoice amount × Cost of funds × (Days early / 365)

A $50,000 invoice paid 10 days early with a cost of funds of 9 percent costs $50,000 × 0.09 × 10 / 365 = $123. If the supplier offers nothing in return, you have given away $123. Across hundreds of invoices, the amounts add up.

What it costs to pay late

Late payment has costs that are harder to measure.

The fee alone looks small, but the secondary effects can be large, especially with a sole-source supplier. A company that paid 10 days late on all $3,600,000 of purchases would hold back about $98,630 of cash ($9,863 × 10), worth around $8,877 a year at 9 percent. A supplier price increase of just 0.25 percent on the same spend would cost $9,000. The financing gain disappears quickly.

A decision table

Early-payment discounts: the test

Calculate the annualized rate of the discount and compare it with your cost of funds, including the rate on your credit line or the return on your cash.

Annualized rate = (Discount / (1 - Discount)) × (365 / (Full term days - Discount days))

For 2/10 net 30, the result is about 37.2 percent. For 1/10 net 45, it is (0.01 / 0.99) × (365 / 35) = 10.5 percent. If your line of credit costs 9 percent and you have availability, the 1/10 net 45 discount is only a small gain, which may not be worth the risk of using your line. See 2/10 net 30 explained.

Payment-run timing

Many companies pay in a weekly run. If the run is every Friday and an invoice is due on Monday, the invoice is paid on the previous Friday, 3 days early. Over a year, the average early payment from a weekly run is about half a week (3.5 days). Moving to two runs a week reduces it to about 1.75 days.

For $3,600,000 of annual payments, daily payments are $9,863:

Moving from weekly to twice weekly releases about $17,260 at no cost to suppliers, since each invoice is still paid on or before the due date. Accounts payable automation can schedule payments by due date, as discussed in accounts payable automation software: a buyer's guide.

When early payment makes sense

• A strong discount. The annualized return is well above your cost of funds.
• A strategic or fragile supplier. Paying a small, critical supplier faster can protect supply.
• Price protection. A supplier may offer a lower price for faster payment.
• Preferred allocation. In a shortage, some suppliers prioritize fast payers.
• Excess cash with no better use. A dynamic discounting program can turn idle cash into a return. See dynamic discounting.
• Settlement of disputes. Prompt payment of undisputed amounts can build goodwill.

When late payment cannot be avoided

Sometimes cash simply is not there. How you handle it makes a large difference.

1. Know early. Use the 13-week forecast to see the problem weeks ahead. See the 13-week cash flow forecast.
2. Prioritize. A common order is payroll and payroll taxes first, then taxes, critical suppliers, secured lenders and key operating costs, then other suppliers. Seek advice if you hold funds in trust or have legal obligations.
3. Call before the due date. Suppliers respond better to a warning and a plan than to silence.
4. Offer a specific date and amount. "We will pay $20,000 on the 10th and the balance on the 24th."
5. Keep promises. A broken promise costs more than the original delay.
6. Pay small suppliers first when the amounts are minor but the dependence is high.
7. Fix the cause. Look at collections, inventory and costs. See how to bridge a cash flow gap without overborrowing.

Putting numbers on a better payment policy

Take the company with $3,600,000 of annual supplier payments, which today pays invoices an average of 7 days early because payments are released when approved and run weekly. It adopts a policy of paying on the last run before the due date, with two runs a week.

No supplier is paid late, and no terms are renegotiated. The gain comes entirely from timing discipline. If the company also takes discounts only when the annualized return exceeds 15 percent, it avoids giving up cash for low-value discounts. Review the policy once a year and after any major change in cost of funds.

Segmenting suppliers

A single rule rarely fits all. A simple segmentation keeps the policy fair.

A rule set you can adopt

1. Pay every invoice on the last payment run on or before its due date.
2. Take early-payment discounts when the annualized return exceeds your cost of funds by an agreed margin, and you have the cash without breaching your minimum balance.
3. Never pay late without contacting the supplier first.
4. Review the payables aging report weekly. See the accounts payable aging report.
5. Define a list of critical suppliers and treat them according to written rules.
6. Negotiate terms rather than stretching them. See how to negotiate better supplier payment terms.
7. Track DPO against agreed terms, and report the difference.

How this fits in the forecast

Show supplier payments in the week you will actually pay, not the week the invoice arrives. Use the payables aging report for existing bills and a payment assumption for future purchases. If you plan to take discounts, show the earlier date and the net amount. For product companies, purchases follow the demand plan, so a better plan improves the accuracy of the payment forecast. See how to build a cash flow forecast you will actually use and demand planning and inventory optimization.

Common mistakes

• Paying when approved, rather than by due date.
• Taking discounts without checking the return.
• Stretching suppliers silently.
• Treating all suppliers alike.
• Ignoring the cost of lost goodwill.
• Not communicating during a cash squeeze.
• Failing to track DPO.

FAQs

Should I pay suppliers early or on time?

Pay on the due date unless an early-payment discount offers a return above your cost of funds, or the supplier is fragile or critical. Early payment without a benefit gives away cash.

Is it okay to pay suppliers late?

Not without agreement. Late payment can bring fees, lost discounts, tighter terms and supply risk. If you cannot pay on time, contact the supplier in advance with a specific plan.

How do I know if an early-payment discount is worth it?

Annualize the discount and compare it with your borrowing cost or the return on your cash. A discount of 2 percent for paying 20 days early is worth about 37 percent a year.

How often should I run supplier payments?

More frequent runs reduce how early invoices are paid. Weekly runs pay invoices about 3.5 days early on average, and twice-weekly runs about 1.75 days.

What should I do if I cannot pay my suppliers on time?

Forecast the shortfall early, prioritize critical payments, call suppliers before the due date and offer specific dates. Address the cause of the shortfall.