Contractor and Trades Cash Flow: A Management Playbook

Trades businesses such as plumbers, electricians, heating and air conditioning engineers, roofers and builders earn job by job and spend every day: parts, fuel, vans, tools and wages. A trades business that is fully booked can still run short if customers pay slowly, parts go on account without a plan, and a quiet season follows a busy one. This playbook covers the habits that keep cash flowing. For how trades cash flow works and a worked seasonal example, see the contractor and trades cash flow forecast page.

The weekly routine

1. Jobs completed last week, and whether each was paid or invoiced.
2. Unpaid invoices: who owes what, and who to chase today.
3. Deposits taken for upcoming jobs, and parts bought for them.
4. Supplier account statements due this month.
5. Van, fuel, insurance and loan payments this week and next.
6. Booked work for the next four to eight weeks, and the lowest cash balance ahead.

Get paid on the day

For homeowners and small jobs, the best payment terms are “on completion”:

• take card payments on site, or send a payment link before you leave
• send the invoice from your phone the moment the job is finished
• make payment instructions clear on every quote and invoice
• for regular customers, keep a card on file with their agreement

Every day between finishing a job and invoicing it is a day added to your wait, and invoices sent days later are paid more slowly and disputed more often.

Deposits and stage payments

Ask for a deposit on any job with significant materials or more than a day or two of work: 25 to 50 percent is common. For larger jobs, agree stage payments at clear milestones. Deposits pay for the parts, protect you if the customer cancels, and filter out customers who were never going to pay.

Account customers

Commercial clients, letting agents and property managers usually pay on account, often 30 days or more. Before opening an account, agree terms in writing and check the customer pays reliably. Chase overdue accounts weekly and stop work for customers who are persistently late. See how to forecast receivables.

Parts and supplier accounts

Trade accounts are convenient but easy to let run up. Buy parts for specific jobs where you can, and match each purchase to a job and its payment. Review each supplier statement monthly, and know the date each is due. A pile of statements all due on the same day is a common cause of a sudden squeeze.

Vans, tools and equipment

Vans, tools and equipment are the biggest fixed costs after wages. Put every finance payment, insurance renewal, service and MOT or inspection in the forecast. Before adding a van or major tool, check the forecast in your quietest month, not your busiest.

Seasons

Heating trades peak in winter, air conditioning in summer, roofing and building in drier months. Forecast from last year’s months, save part of the busy season’s surplus, and use quiet periods for servicing contracts, maintenance and marketing. Service agreements with regular customers bring steady monthly income that smooths the seasons.

Emergency call-outs

Emergency work usually pays well and should be paid on the day. Set a clear call-out charge, take payment before leaving, and forecast emergency income cautiously, since it depends on weather and luck. Don’t let a run of emergency jobs push planned, deposit-paid work into later weeks without checking what that does to cash.

Pricing and quoting

Quote with all costs included: parts, travel time, waste disposal, and a margin for callbacks. Review prices when parts costs rise. Underpriced jobs are a slow cash drain even when the diary is full. Track which job types make the most per hour, and quote the rest accordingly.

Hiring

A new technician adds wages, a van, tools and insurance from their start date, while the extra jobs take a few weeks to fill. Put the full cost in the forecast from month one and make sure the quiet months can carry it.

Tax

Set aside tax on each payment, including sales tax or VAT if you’re registered, and income tax. Forecast each payment on its due date so a tax bill never lands on a quiet month unplanned.

A worked month

An HVAC business with four engineers takes $68,000 in a normal month. At the weekly check, it finds $9,400 of completed jobs not yet invoiced, because paperwork was left for Friday afternoons. Two account customers owe $12,000 between them, one 45 days overdue. The parts supplier statement of $18,000 is due in ten days.

Actions: invoices go out the same day, and from now on each engineer sends invoices from site. The overdue account customer is called and pays within the week. A large job starting next month gets a 40 percent deposit to cover its equipment. The supplier statement is paid on time, and the balance stays above the buffer.

Warning signs

• Completed jobs not invoiced for days
• Account customers paying later each month
• Supplier accounts growing faster than sales
• Paying for parts for jobs that haven’t been paid for
• Van or tool purchases made in the busy season without checking the quiet one
• Using the tax money to pay suppliers
• The owner working longer hours while the bank balance stays flat
• Callbacks and warranty work growing, unpaid

When cash gets tight

1. Invoice everything outstanding and chase every overdue account.
2. Ask for deposits on all new work.
3. Talk to suppliers about account terms before payments are late.
4. Delay non-essential tool and equipment purchases.
5. Pause owner drawings above your agreed minimum until the forecast recovers.
6. Offer service agreements or maintenance plans to bring in steady income.

Tools

The premium Contractor & Trades template includes a Job Costs tab that ties parts and materials to job revenue, lines for deposits, service contracts and emergency call-outs, scenarios for a mild winter or lost contract, and a dashboard. See also the construction playbook for larger projects with progress billing.