How to Reduce Debtor Days: A Working Capital Playbook for SMEs

Sudhir Singal · 15 Oct 2026

Many profitable SMEs still struggle to pay salaries and suppliers on time. The reason is usually not sales or margins. It's that the money customers owe is taking too long to come in. Every extra day a customer takes to pay is a day your cash is funding their business instead of yours.

What debtor days means

Debtor days, also called Days Sales Outstanding (DSO), tells you how long, on average, your customers take to pay you after you invoice them.

Debtor days = (Trade receivables ÷ Revenue for the period) × Days in the period

Say your annual revenue is ₹36 crore and customers owe you ₹6 crore at year end. Your debtor days are (6 ÷ 36) × 365, or about 61 days. In other words, you're waiting two months to get paid for work you've already delivered.

Why it matters more than you think

Cutting debtor days releases cash that is already yours. In the example above, every 10 days you take off frees up roughly ₹1 crore (₹36 crore ÷ 365 × 10). That's working capital you don't need to borrow, and interest you don't need to pay.

• Less borrowing. Lower receivables mean smaller working capital loans and lower interest costs.
• Lower risk of bad debts. The longer an invoice stays unpaid, the less likely it is to be paid in full.
• Better terms from lenders. Banks and investors look closely at receivable quality. Faster collections strengthen your case for credit.

Where SMEs usually lose days

• Late or wrong invoices. Invoices go out days after delivery, or with missing PO numbers, wrong GST details or unclear amounts, and the customer simply sends them back.
• Loose credit terms. Payment terms are agreed casually, never written into the contract, or extended for every customer who asks.
• No follow-up process. Nobody owns collections, so reminders go out only when cash gets tight.
• One or two large customers. A big customer that pays slowly can drag down the whole business, and SMEs often hesitate to push them.
• Disputes left open. A small dispute on one line item can hold up payment of the entire invoice for weeks.

A seven-step playbook to reduce debtor days

1. Set clear credit terms, in writing

Decide payment terms by customer type, and put them in your quotes, contracts and invoices. Check a new customer's credit history before offering long terms, and set a credit limit for each account.

2. Invoice on the day of delivery

Make invoicing part of delivery, not a month-end task. Check every invoice before it goes out: the PO number, GST details, the contact person and the bank details. One rejected invoice can cost you two weeks.

3. Make paying you easy

Put UPI, bank transfer details and a payment link on every invoice. Find out how your customer's accounts team works, including their payment run dates and who approves invoices, and send your invoice in time to make the next run.

4. Follow up on a fixed schedule

Send a reminder a few days before the due date, on the due date, and then every week after. Assign one person to own collections, and escalate overdue accounts to a senior person in the customer's business after an agreed number of days.

5. Track ageing every week

Review a receivables ageing report every week, grouped into 0 to 30, 31 to 60, 61 to 90 and over 90 days. Focus on the largest and oldest amounts first, and resolve disputes quickly by sorting out the disputed line and getting the rest paid.

6. Use incentives and consequences

Offer a small discount for early payment where your margins allow it, and apply the late payment terms in your contract. For repeat late payers, consider advances, milestone billing or putting new orders on hold. If you're a registered MSME, your buyers are generally required to pay within 45 days under the MSMED Act, and you can raise delayed payments through the government's MSME Samadhaan portal.

7. Convert invoices to cash when it makes sense

If customers insist on long terms, invoice discounting, factoring or the TReDS platforms (government-regulated platforms where large buyers' invoices are financed) can turn approved invoices into cash within days. Compare the financing cost with what slow collections are costing you.

From 60 days to under 40 in six months

We worked with a business whose customers were taking around 60 days to pay. By tightening credit terms, fixing how invoices went out, and putting a weekly collections review in place, it brought debtor days below 40 within six months. The cash that had been stuck with customers came back into the business, and it relied far less on its working capital lines.

When to bring in a CFO

If your business is growing but cash always feels tight, look at your receivables first. A fractional CFO can set up the credit policy, collection process and reporting you need, without the cost of a full-time hire.

Related: How to Calculate Your Cash Runway, and 5 Ways to Extend It