Part 6: Estimating, Pricing, and Managing Work
Invoicing and Getting Paid
Getting paid on time starts with clear, professional invoicing.
Completing the work on a project is not the final step in running a business. The final step is getting paid. Many new entrepreneurs assume that once the work is finished, payment will automatically follow. In reality, payment only happens when a clear and professional invoice is issued. Professional contractors understand that invoicing is not just paperwork — it is a critical part of maintaining cash flow and keeping the business financially healthy.
Learning Objectives
By the end of this chapter, you will be able to:
- Explain what an invoice is and why prompt invoicing matters for cash flow
- Identify the key elements every invoice should include
- Describe when and how to use deposits and progress payments on larger projects
- Follow up on overdue payments professionally
What an Invoice Does
An invoice documents the work that was completed, shows the total cost of the project, clearly communicates the amount owed, and establishes the payment terms. Invoices also create an official record of the transaction, which matters for bookkeeping, tax reporting, and resolving any disputes that arise later. A clear and professional invoice signals to customers that the business is organized and takes its work seriously.
When to Send an Invoice
One of the most common mistakes new entrepreneurs make is waiting too long to send invoices. Once a job is complete the invoice should go out as soon as possible — delays in invoicing lead directly to delays in payment. When labour, materials, and costs have been tracked during the job, preparing the invoice is straightforward because all the necessary information is already recorded. Consistent job tracking turns invoicing from a stressful reconstruction of events into a quick and simple task.
What Should Be on an Invoice
A clear invoice includes business information (business name, contact details, and business number if applicable), customer information (customer name, project address, contact details), and invoice details (invoice number, invoice date, and a description of the work completed). It also includes the project costs: labour charges, material costs, applicable taxes, and the total amount due. These details ensure the customer understands exactly what they are being charged for, which reduces confusion and improves the likelihood of prompt payment.
Payment Terms
Invoices should clearly state when payment is expected. Common terms include due upon receipt, net 7 days, net 15 days, or net 30 days. For smaller residential projects contractors often request payment immediately upon completion. For larger commercial work payment timelines may be longer. Stating payment terms clearly establishes professional expectations and removes any ambiguity about when the money is due.
Deposits and Progress Payments
On larger projects contractors rarely wait until the end to receive payment. A deposit collected before work begins helps cover initial material costs and secures the project schedule. Progress payments at defined stages of the project keep cash flowing and reduce the financial risk the contractor carries. A typical structure might be a deposit before work starts, a payment at a defined midpoint, and a final payment on completion.
Without this structure contractors may spend months paying for materials and labour before receiving a dollar from the customer — the same cash flow gap that the previous chapter’s projections help you anticipate and plan for.
Using the Invoice Tab
The estimating spreadsheet included with this textbook contains an Invoice tab that allows you to enter customer information, labour costs, material costs, and taxes. As businesses grow many contractors move to dedicated software tools like QuickBooks, Jobber, Joist, or FreshBooks that generate professional invoices, track outstanding payments, and manage cash flow automatically. These tools are worth exploring as the business develops. The most important thing at any stage is the habit of sending clear invoices quickly.
Following Up on Payments
Even with clear invoices and stated payment terms, payments are sometimes delayed. Professional contractors monitor outstanding invoices regularly and follow up when payment is overdue. A short and professional message is usually enough: just checking in to make sure the invoice was received, please let me know if you have any questions. Maintaining a professional tone protects the customer relationship while still making clear that payment is expected.
Key Takeaways
- An invoice is how the business gets paid — sending it promptly after completion is one of the most important habits a trades entrepreneur can develop.
- Clear invoices include business details, customer details, a description of work, itemized costs, and stated payment terms.
- Deposits and progress payments on larger projects reduce cash flow risk by ensuring money flows in throughout the job, not just at the end.
- Following up on overdue invoices professionally — not aggressively — protects both the cash flow and the customer relationship.
Reflect
Why do you think so many contractors delay sending invoices after completing a job? What is the real cost of that delay — not just financially, but in terms of how it affects the customer relationship and the business’s cash position? If a client let a 30-day invoice go unpaid without any communication, how would you handle the follow-up?
