UI/UX auditors review websites, apps, and software products and report on usability problems, accessibility gaps, and design inconsistencies. Clients are usually product teams, startups, agencies, and ecommerce owners who want a prioritized list of fixes before a redesign, launch, or conversion push. Invoices typically cover the audit itself, any stakeholder presentation, and follow-up work such as retesting or design guidance.
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Invoice_1001_Client_2026-10-14.pdf
Most auditors price audits as a flat fee based on scope: number of screens or flows, platforms (web, iOS, Android), and depth of method (heuristic review only versus review plus analytics and user testing). Hourly rates are common for ad hoc consulting, workshops, and retainers, and are also used internally to build the flat fee. Accessibility audits against WCAG 2.1 or 2.2 are often priced separately per page template or per flow, since manual testing with screen readers takes extra time. Usability testing adds pass-through costs such as participant recruiting and incentives, which are usually billed at cost or with a small markup. Follow-up support, like a fix-review pass or a retainer for ongoing design critique, is billed hourly or as a monthly block of hours.
| Service | Priced | Typical range |
|---|---|---|
| Heuristic UX review (small site or app, up to 10 screens) | flat fee | $1,500-4,000 |
| Full UX audit with analytics review and prioritized roadmap | flat fee | $4,000-12,000 |
| WCAG accessibility audit (manual plus automated testing) | per page template or flow | $250-800 |
| Moderated usability testing sessions (recruiting separate) | per session | $150-400 |
| Findings presentation or stakeholder workshop | per session | $500-2,000 |
| Ad hoc UX consulting and design critique | per hour | $90-200 |
| Fix verification / retest after changes | per hour | $90-175 |
| Ongoing UX advisory retainer | per month | $1,500-5,000 |
Typical US ranges. Rates vary by region, experience, and job size.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| UX audit: checkout and account flows (web, 14 screens), heuristic review with prioritized findings report | 1 flat fee | $3,800.00 | $3,800.00 |
| Analytics and session recording review (funnel drop-off analysis) | 6 hours | $125.00 | $750.00 |
| WCAG 2.2 AA accessibility testing, page templates (home, product, cart, checkout) | 4 templates | $400.00 | $1,600.00 |
| Findings presentation to product and engineering team (90 min, includes prep) | 1 session | $750.00 | $750.00 |
| Participant incentives for 5 usability sessions (passed through at cost) | 5 participants | $75.00 | $375.00 |
| Total | $7,275.00 | ||
Notes: Payment due within 14 days of invoice date. Deposit of 50% ($3,737.50) was received on contract signing; balance due shown on the invoice total. Report delivered as PDF with annotated screenshots. One round of clarification questions is included for 30 days after delivery; additional retesting billed at $125/hour.
Clients often ask later why a page was not reviewed. Listing what was in scope ties the fee to the work delivered.
Shows what the fee covered and helps clients who need documentation for compliance or procurement.
Names the report, annotated files, or recorded sessions that were handed over, which supports the payment milestone.
Workshops, analytics review, and retests are often billed separately and need a clear basis.
Clients want these itemized at cost so they are not confused with your professional fee.
Audits usually start with a deposit, and the invoice should reconcile it to avoid double payment questions.
Larger companies and agencies often cannot process payment without it.
Many auditors take a 30% to 50% deposit before starting, with the balance due on delivery of the report. Net 14 or net 30 is typical, and larger companies may insist on net 30 to net 60 through their accounts payable. Retainers are billed monthly in advance. A late fee of 1% to 1.5% per month is common if stated in the contract before work begins. Payment is usually by ACH, card, or check, and pass-through expenses like participant incentives are sometimes paid upfront because they have to be fronted to recruits.
Vague audits expand quickly. State the exact flows, device types, and number of screens, and price extra pages or platforms as add-ons.
Walking a team through findings takes prep and live time. Listing it as its own line item prevents it from being assumed free.
Recruiting platforms and participant payments can add up fast. Collect these upfront or invoice them clearly so they do not eat into your margin.
Clients often come back with weeks of questions after the report. Include a defined clarification window and bill retests and extra calls hourly.
Your work ends when findings are delivered. If payment depends on the client fixing issues, it can be delayed for months.
Flat fees are more common for defined audits because clients want a fixed cost and you can price on value and scope. Use hourly for open-ended consulting, workshops, and retests where the scope is not fixed.
Yes. List them as a separate pass-through line item at cost, with the number of participants and amount per person. Keep receipts or payout records in case the client asks.
Send the deposit invoice when the contract is signed and the final invoice when the report is delivered. For longer audits, you can split into milestones such as research complete and report delivered.
It depends on your state. Some states tax digital or consulting services and many do not. Check your state's rules or ask an accountant, and show any tax as a separate line when it applies.
Price per template or flow rather than per issue, so the fee does not depend on how many problems exist. If the client adds pages after you start, bill them under a change order.
Send a Ui Ux Auditor estimate for approval, then turn it into an invoice when the work is done.
Ui Ux Auditor estimate template