How do I reduce my days sales outstanding (DSO)?
How to reduce DSO without strangling sales
Short answer
Five levers, in order of typical impact: invoice the day work is delivered (not weekly), shorten payment terms to net 15 or net 21 instead of net 30, make a friendly call on day 3 past due, require deposits or progress billing on engagements over your trade-credit threshold, and run a credit check before extending net terms to new accounts. Doing one of these reduces DSO modestly; doing all five usually drops DSO by 10-20 days for a small service business.
DSO is the math of how long it takes you to convert finished work into cash. The formula is straightforward: average accounts receivable divided by net revenue, times 365. A construction firm running at $1.2M annual revenue with $200,000 in AR has a DSO of 61 days. The number itself is less interesting than the trend — DSO climbing month over month is a leading indicator that working capital is about to get tight.
Industry benchmarks vary widely. Retail and hospitality run near zero because most transactions settle at the register. Service businesses on net-30 terms typically land in the 35-50 day range. Construction, manufacturing, and B2B enterprise software often run 60-90 days because the underlying engagements take that long to bill cleanly. Compare yourself to your industry peers, not to a universal target.
The single biggest lever for most small businesses is the gap between work-completion date and invoice-sent date. If you finish a project on Monday and bill on Friday because that's billing day, you've added four days to DSO before the customer even sees the invoice. Invoice the same day work is accepted; the customer is at peak willingness to pay, and the clock starts immediately rather than after your internal cycle.
The second lever is the payment terms themselves. Net 30 is a default, not a law of nature. Shortening to net 21 or net 15 reduces DSO by exactly that many days for any customer who pays on time. The friction with customers is usually less than people fear — most B2B buyers work the AP queue weekly anyway, and the change matters mainly for the deadbeats, who are not improved by giving them more time.
The third lever is the call at day 3 past due. Recovery rates on day-3 follow-up sit in the 80-90 percent range, dropping below 50 percent by day 60. Most small businesses skip this entirely and let invoices age into the 60-90 day band where collection effort returns less. Syntharra automates the day-3 call, runs the friendly second and third attempts, and routes disputes to a human — which is the same thing as adding a part-time AR clerk who never has a bad week.