CRO (conversion rate optimization) consultants help ecommerce stores, SaaS companies, and lead generation businesses turn more of their existing traffic into customers. They bill for site audits, analytics reviews, user research, A/B test design and management, and ongoing optimization retainers. Most work solo or in small agencies and invoice marketing managers, founders, or ecommerce directors.
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CRO work is usually sold as a mix of fixed-fee projects and monthly retainers. One-time audits (analytics, UX, funnel review) are typically a flat fee based on the number of key pages or funnels reviewed. Ongoing testing programs are billed as a monthly retainer tied to a set number of experiments or hours, since a test takes weeks to run and results can't be promised. Hourly billing is common for newer consultants or small ad hoc tasks like a landing page review or a call with a developer. Some consultants add a performance bonus or revenue share on top of a base fee, but most keep the base fee independent of results because traffic, seasonality, and client dev speed are outside their control. Testing software, heatmap tools, and survey tools are either passed through at cost or built into the retainer. Always separate the fee for analysis from the fee for implementation if you or a developer will build the variants.
| Service | Priced | Typical range |
|---|---|---|
| Hourly consulting | per hour | $100-250 |
| Conversion audit (analytics, UX, and funnel review) | flat fee | $1,500-7,500 |
| User research (session recordings, surveys, user tests) | flat fee | $1,000-4,000 |
| A/B test design, setup, and analysis | per test | $500-2,500 |
| Landing page review and recommendations | per page | $300-1,000 |
| Monthly optimization retainer | per month | $2,500-8,000 |
| Analytics setup and event tracking cleanup | flat fee | $750-3,000 |
| Workshop or team training | per half day | $1,000-3,000 |
Typical US ranges. Rates vary by region, experience, and job size.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Conversion audit: checkout funnel, product pages, and mobile experience (written report and 60-minute walkthrough) | 1 flat fee | $3,500.00 | $3,500.00 |
| GA4 event tracking cleanup and checkout funnel report setup | 1 flat fee | $1,200.00 | $1,200.00 |
| A/B test design and analysis: product page add-to-cart section (test #1) | 1 per test | $1,200.00 | $1,200.00 |
| Session recording and heatmap review (cart and checkout pages) | 6 hours | $150.00 | $900.00 |
| Heatmap tool subscription, billed at cost (March) | 1 month | $99.00 | $99.00 |
| Total | $6,899.00 | ||
Notes: Payment due within 15 days of invoice date. Test results reflect data collected March 4-25 and are described in the attached report. Late balances are subject to a 1.5% monthly fee. Thank you for your business.
Clients often need to show finance what they received. Naming the audit, test report, or workshop makes the charge easy to match to a document.
Stating the month covered and the number of tests or hours included prevents disputes when a month has fewer launched experiments than expected.
Listing the test name and date range ties the charge to specific work, even if the result was flat or inconclusive.
Heatmap, survey, and testing platform fees passed through at cost should be separate lines so clients see they are not part of your labor.
Hourly lines for research review or ad hoc calls need quantity and a short description to hold up to client questions.
Mid-size and enterprise clients often require a PO number for accounts payable to process payment.
Clients in the US may need your W-9 on file, and clear terms and methods speed up payment.
Audits and fixed-fee projects commonly take 25-50% upfront with the balance due on delivery of the report. Retainers are usually billed monthly in advance, due on receipt or within 7-15 days, so work doesn't continue without payment. Larger companies often pay on net 30 terms, so confirm that before starting and send invoices promptly. Many consultants add a late fee of around 1-1.5% per month and pause active tests or reporting if an invoice is substantially overdue. ACH and bank transfer are the most common for larger invoices, while credit card is common for smaller ones, sometimes with a processing fee added.
A test that loses or comes back flat still produced a learning and took the same effort to build and analyze. Write your contract and invoice so fees are for design, setup, and analysis rather than for a winning result.
If you or a developer will build variants, price that as its own line. Clients often compare your fee to a developer rate, and bundled pricing hides where the effort went.
State how many tests you will plan, launch, or analyze each month, and what happens when a test needs more time to reach significance. This keeps clients from expecting a new result every week.
For audits, bill a deposit at kickoff and the balance when you deliver the report, before implementation questions start. Waiting until the end of a long follow-up cycle delays payment.
Low-traffic sites cannot run many valid A/B tests. If a client has limited traffic, price research-heavy work such as user testing and audits instead, and note this in your scope so billing matches what is realistic.
Flat fees work best for audits and defined projects because clients care about the deliverable. Retainers suit ongoing testing. Hourly billing fits small, uncertain tasks like a one-off page review or calls with a developer.
Some consultants do, but it's hard to prove attribution because seasonality, ad changes, and promotions all affect results. If you do it, agree in writing on the baseline, measurement method, and time period, and keep a base fee so you're paid for the work.
Bill the same fee. The fee covers hypothesis, design, setup, QA, monitoring, and analysis, and an inconclusive result is still a result. Say this in your proposal and contract.
If the tool is bought for that client, pass it through at cost on a separate line or ask the client to buy the subscription directly. If you use your own account across clients, build the cost into your fee.
Most consultants invoice at the start of the month or on the same day each month, with payment due within 7-15 days. Billing in advance keeps cash flow predictable and avoids working a month before getting paid.
Send a CRO Consultant estimate for approval, then turn it into an invoice when the work is done.
CRO Consultant estimate template