Every contractor gets one eventually: "I did not expect it to be this much." Most disputes are not about the work. They are about a surprise. The customer had a number in their head and the bill did not match it.
Step 1: Ask what part they question
Do not defend the whole bill. Ask which line they are unsure about. Usually it is one thing — extra materials, a second trip, a change they forgot asking for. Narrowing it down turns an argument into a conversation.
Step 2: Show, do not argue
- The estimate they approved. What you both agreed to before the work.
- The change order. If the job grew, the approval for the extra work.
- Photos. Before and after shots, or the rotted board behind the wall.
- Line items. Labor, materials, and extras on separate lines, not one lump sum.
Step 3: Decide what is worth it
If you made a mistake, fix the invoice and send a corrected one. If the bill is right, say so plainly and offer the proof. Sometimes a small discount to keep a good customer is worth it. Sometimes it is not. Decide based on the customer, not your pride.
Step 4: Get the undisputed part paid
If they agree with most of the bill, ask them to pay that part now while you sort out the rest. That keeps money moving and shows good faith on both sides.
Stop the next one
Disputes come from surprises. Approved estimates, written change orders, and photos on the invoice remove most of them. In EZ Invoices, Pro and Business plans let you attach job photos and send change orders the customer approves before you do the extra work.
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