Money you've earned but not collected is a loan you're making, interest-free, to people who already got the goods. Most owners treat collection speed as weather — some clients are slow, what can you do. It's not weather; it's policy. Nearly every day of your average collection time traces to a decision you control: when you ask, how you ask, what terms you set, and how easy paying is. This is the playbook, ordered by leverage.
(Operations has a lesson on invoicing mechanics — tools and templates. This is the money view: cycle-time engineering.)
Deposits, always, on anything sizable. A third to a half up front is standard across trades and services. It funds materials, filters unserious buyers before you've spent hours on them, and cuts the amount ever at risk. The customers who balk at a normal deposit are disproportionately the ones who'd have paid late anyway — the deposit is a screening device that pays you.
Progress billing on long work. Anything over a few weeks bills at milestones: on start, at midpoint, on completion. Never let a quarter of unbilled work pile up inside one end-date invoice — that's maximum float extended, maximum dispute surface, maximum pain if the relationship sours mid-project.
Terms are yours to set. Net-30 isn't law; it's a default someone else picked decades ago. Due-on-receipt or net-15 is normal for small services. Big-company clients will impose their AP cycle regardless (price that float into their rate — a customer who pays in 60 days is buying on credit and credit costs money). Late-fee clauses: worth stating (they signal seriousness and anchor the follow-up call) as long as your contract says it and your state allows what you charge — one for the contracts lessons.
The single highest-leverage move in the playbook: invoice at the moment of delivery. Same day. Not month-end batch, not "when I get to paperwork Sunday." Every day between finishing and invoicing is pure, self-inflicted float — the clock on net-30 hasn't even started while the invoice sits in your head. Service businesses that move from month-end batching to same-day invoicing routinely pull their whole cycle in by a couple of weeks with zero customer friction, because the customer never sees the change — only the calendar does.
Better still, where your market allows: payment at delivery. Card reader at the final walkthrough, payment link in the completion text, autopay on file for recurring clients. "How would you like to take care of this today?" is a normal sentence in most consumer services — the businesses that don't ask are choosing float out of habit.
Make paying stupidly easy. Online payment link on every invoice, card and ACH accepted, autopay for anything recurring. Processing fees sting (they're in your unit math) but weigh them against weeks of float, chase time, and bad-debt risk on checks-in-the-mail. For most small businesses the fee buys the better trade.
Late payments mostly aren't malice — they're your invoice sitting in someone's pile. Systems beat feelings: