How to handle an invoice dispute with a client
A disputed charge needs a specific question and a traceable answer. Use this sequence to investigate the line, explain the evidence and preserve the agreed outcome without turning every exchange into a collection demand.
Product claims checked against the ABH truth sheet on 14 October 2026. Examples are fictional and illustrative. Operational guidance only, not legal, tax or accounting advice.
Short answer
Identify the contested invoice line and reason, review authorization and delivery evidence, then document the agreed correction or explanation. Keep receipt reconciliation separate. Internal time approval supports evidence but does not establish client acceptance.
Review current plans for the time and invoicing workflow. Client funds are received outside ABH and recorded manually.
Separate a dispute from a late payment
A late invoice has passed its agreed due date. A disputed invoice has a specific objection to the charge, scope, delivery or supporting record. The two conditions can coexist, but they need different conversations. Asking again for payment will not explain why a client thinks a revision was included. First establish whether there is a substantive objection or an administrative obstacle such as a missing purchase reference.
Acknowledge the question and name one agency contact to investigate it. Record when the objection arrived and when you will reply with evidence. Avoid debating by copying the entire delivery team into an email chain. For an undisputed overdue balance, use the separate late invoice follow-up workflow. This guide begins when the client challenges what the document says.
Ask exactly which line is disputed
Ask for the invoice reference, disputed line, amount and reason. A statement that “the invoice is wrong” is too broad to investigate. Determine whether the disagreement concerns hours, rate, service period, authorization, duplicate work or a missing deliverable. Repeat the issue back in neutral language so both parties are answering the same question rather than defending their whole relationship.
Keep undisputed and disputed amounts distinct in your working record, without assuming that partial payment resolves the disagreement. A fictional invoice for USD 2,000 excluding taxes might contain one disputed USD 300 revision line. Confirm whether the client accepts the other USD 1,700 and what they believe the revision agreement said. Do not invent a new due date or concession before checking the terms.
Share the evidence behind that line
Gather only evidence relevant to that line: the agreed scope, accepted changes, dated work description, review history and deliverable reference. Build a short explanation that connects authorization to work performed and then to the charge. Raw hours alone do not show that an extra was approved, and an approval message alone does not establish that the invoiced work was delivered.
ABH proof-backed invoice lines can be traced to logged time, with time tracking connected to clients, projects and tasks. Single and bulk time approval support internal review. They do not certify client acceptance. Use the proof-of-work checklist to select evidence, and remove private team commentary or another client's information before sharing it with the recipient.
Agree a correction or hold the line
If the agency made an error, explain it specifically and agree how to correct the document with your bookkeeper. If the charge is supported, state the relevant agreement and invite the client to identify the evidence they believe is missing. An explanation should be firm enough to be useful without threatening legal action or implying that a software status decides the commercial outcome.
For scope disagreements, use the change request billing guide to compare the original boundary with the extra. Record any concession as a deliberate decision by an authorized person, with the amount and reason. ABH has no credit note feature today. Do not promise one or offer legal collection advice; seek qualified advice if the dispute cannot be resolved commercially.
Document the outcome and update the record
Write a short outcome record: issue raised, evidence considered, decision, agreed action, responsible person and next review date. Send the client a clear statement of which invoice or correction to use. Preserve the original correspondence and document relationship so a later reviewer can understand what changed. A verbal agreement without a recorded amount or next action leaves the same dispute open to interpretation.
ABH provides invoice statuses, due dates, PDFs and public invoice links. When money actually arrives through the agency's external arrangement, an Owner records it manually in the exact-amount append-only ledger. A correction or concession is not itself a cash receipt. ABH does not collect client payments. Reconcile any partial receipt separately from the decision about the disputed line.
Prevent repeats with approval before invoicing
After resolution, identify the preventable gap. Was the description vague, the rate unclear, the extra unauthorized or the timesheet approved without checking context? Change the specific handoff that failed. The timesheet approval guide focuses on internal entry review; client authorization must still come from the engagement and accepted changes. Do not describe that process as an ABH invoice approval workflow.
Review the agency billing mistakes guide for related handoff failures. ABH client email reminders are available on Starter and Pro, but the agency should review follow-up while a dispute is open. No reminder substitutes for an answer. For clearer notes on future work, use the time entry description examples before the next billing cutoff.
Frequently asked questions
Is an invoice dispute the same as a late payment?
No. A dispute challenges the charge or its support. An invoice can be both disputed and overdue, so establish the objection before choosing the next action.
Does approved time prove a client owes for an extra?
No. Internal time approval reviews the entry. The agreement and accepted scope changes establish authorization to charge.
Can I issue a credit note in ABH?
A credit note feature is not available today. Ask your bookkeeper how to document the agreed correction and preserve the original reference.
Resolve the specific disputed line.
Review current plans for the time and invoicing workflow. Client funds are received outside ABH and recorded manually.