Cash flow problems in contracting rarely come from a lack of work. They come from a gap between when you pay for materials and labor and when you actually get paid by the customer. Closing that gap is where real improvement happens.

Invoice the same day you finish a job or hit a milestone. Every day an invoice sits unsent is a day you’re financing the project out of your own pocket. If you’re doing larger jobs, use progress billing so you get paid at defined stages rather than waiting until the end. Framing is done? Send an invoice. Rough-in is complete? Send an invoice. Don’t wait.

Require deposits before you start work. A 25% to 50% deposit on materials and mobilization is standard in the trades and most customers expect it. If someone pushes back on a deposit, that’s usually a signal they’ll be slow to pay the final invoice too. The deposit covers your upfront material costs so you’re not floating the entire project.

Shorten your payment terms. Net 30 is common but that doesn’t mean it’s required. Net 15 or even due on receipt works for many residential and small commercial jobs. The longer your terms, the longer you wait. And if a customer takes 45 days to pay a Net 30 invoice, you’re nearly two months out from when you did the work.

Follow up on overdue invoices immediately. Don’t let unpaid invoices sit because you’re busy on the next job. A simple reminder at 3 days past due and a phone call at 7 days past due keeps receivables from piling up. Aging receivables are the silent killer of contractor cash flow.

On the expense side, negotiate terms with your suppliers. If you’re paying for materials on delivery but not getting paid by your customer for 30 days, you’re funding the gap yourself. Ask your supply house for Net 30 terms. Many will extend credit to established contractors, and that alone can smooth out cash flow significantly.

Time your big purchases carefully. Buying a $40,000 truck or a piece of equipment right before a slow season puts pressure on cash when revenue dips. Plan major purchases for when deposits or progress payments are coming in, not when you’re between projects.

None of this works if you don’t know your numbers. You can’t manage cash flow you’re not tracking. If your books are months behind or you’re guessing at what’s owed to you versus what you owe, you’re making decisions in the dark. Accurate contractor bookkeeping services give you the foundation to see where cash is going and where the bottlenecks are.

Build a cash reserve equal to at least one month of operating expenses. This takes time, but even setting aside a small percentage from each job adds up. A reserve keeps you from making desperate decisions during slow stretches, like taking a low-margin job just to cover payroll.

If you want to get ahead of cash flow issues instead of reacting to them, budgeting and cash flow forecasting lets you project shortfalls weeks or months in advance. Knowing a tight month is coming gives you time to adjust, whether that means accelerating billing, delaying a purchase, or lining up additional work.

The contractors who consistently have healthy cash flow aren’t necessarily the ones doing the most revenue. They’re the ones who bill fast, collect aggressively, and know exactly where their money stands at all times.