HR services providers are independent consultants and small firms that handle people-related work for businesses that don't have a full in-house HR department. They bill for things like employee handbook writing, compliance reviews, recruiting support, investigations, and ongoing HR advisory. Clients are usually small and mid-sized employers with 5 to 250 employees.
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Most HR consultants mix three models. Hourly billing is common for advisory calls, employee relations issues, and work where scope is unclear. Flat project fees are standard for defined deliverables such as a handbook, job descriptions, an HR audit, or a policy rollout. Monthly retainers, often with a set number of included hours, cover ongoing outsourced HR support, and extra hours are billed at a stated overage rate. Recruiting work is usually priced either as a percentage of first-year salary (commonly 15 to 25 percent) or as a flat fee per hire. Out-of-pocket costs such as background check fees, job board postings, and software subscriptions are typically passed through at cost or with a small handling fee. Investigations and expert-witness-style work usually carry a higher hourly rate and are billed against an advance deposit.
| Service | Priced | Typical range |
|---|---|---|
| HR advisory and consulting | per hour | $95-225 |
| Employee handbook creation | flat fee | $1,500-6,000 |
| HR compliance audit | flat fee | $1,500-5,000 |
| Workplace investigation | per hour | $150-300 |
| Fractional HR manager retainer | per month | $1,000-5,000 |
| Job description writing | per position | $100-350 |
| Recruiting placement | percent of first-year salary | 15%-25% |
| Manager or harassment prevention training | per session | $500-2,500 |
Typical US ranges. Rates vary by region, experience, and job size.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Monthly HR advisory retainer, March (includes up to 10 hours) | 1 month | $1,800.00 | $1,800.00 |
| Additional advisory hours beyond retainer (termination review and PIP coaching for two managers) | 3.5 hours | $150.00 | $525.00 |
| Employee handbook update: PTO, remote work, and anti-harassment policies | 1 flat fee | $1,200.00 | $1,200.00 |
| Job descriptions: Operations Supervisor, Customer Service Rep | 2 positions | $175.00 | $350.00 |
| Background check fees (pass-through at cost) | 3 checks | $42.00 | $126.00 |
| Total | $4,001.00 | ||
Notes: Payment due within 15 days of invoice date. Retainer hours do not roll over. Additional hours are billed at $150 per hour. Late balances are subject to a 1.5% monthly fee. Services are advisory and do not constitute legal advice.
Retainer clients need to see which month the charge covers and which agreement it falls under.
Shows the client what they got and justifies any overage charges.
Handbook sections, audits, and training sessions should be listed so the client can match them to the proposal.
Invoices get forwarded to accountants and owners; keep sensitive employee names and details off the document.
Background checks, job posting fees, and software costs should be itemized so they are not confused with your fees.
For placements, include the candidate start date, accepted salary, and fee percentage so the calculation can be verified, and note any guarantee period.
Clarifies that you provide HR guidance and not legal advice, and reminds the client that the work is confidential.
Retainers are usually invoiced at the start of the month, due on receipt or within 15 days. Project work commonly splits into a 30 to 50 percent deposit at signing with the balance on delivery, or into milestone payments for longer projects like a full audit. Investigations are often funded with an advance deposit that is drawn down against hourly billing. Recruiting fees are typically due within 15 to 30 days of the candidate's start date. Many consultants charge a late fee of 1 to 1.5 percent per month if terms say so in the agreement. ACH and credit card are the most common payment methods, and card fees are sometimes passed on to the client.
State the included hours, what counts as billable time (calls, emails, document review), the response time, and the overage rate. Vague retainers are the main source of billing disputes in HR consulting.
Short questions from owners and managers add up. Logging in 6 or 15 minute increments keeps retainer usage accurate and supports overage charges.
Use a matter name or code for terminations, complaints, and investigations. This protects privacy if the invoice reaches people who should not see the details.
If you offer a replacement or partial refund when a hire leaves in the first 60 to 90 days, put that in writing and reference it on the invoice.
A client that grew from 15 to 60 employees needs different support than at signing. Revisit the retainer annually rather than absorbing extra work.
Use hourly for open-ended advice and employee issues where you cannot predict the scope. Use flat fees for defined deliverables like a handbook or audit. Many consultants combine both through a retainer with an overage rate.
Use a case code or general description such as 'Workplace investigation, Matter 2024-03' instead of names. Break down time by task (interviews, document review, report writing) without revealing sensitive details, and keep detailed notes in your own files.
It depends on the state. Many states do not tax professional or consulting services, but some tax certain business services or software. Check with your state revenue department or a tax professional.
Usually when the candidate accepts the offer or starts work, depending on your agreement. Put the trigger and the due date in your contract, and invoice on that event.
Yes, if your agreement says so. Many consultants bill travel time at a reduced rate or a flat trip fee and add mileage at the IRS standard rate or a stated per-mile rate.
Send a HR Services estimate for approval, then turn it into an invoice when the work is done.
HR Services estimate template