Plain English
Instead of marking up a cost pool, some intra-group services are priced by the hour, the way an external consultancy or law firm would bill — a senior manager's time costs more per hour than a junior analyst's. Hourly rate benchmarking is about finding out what independent professionals of comparable seniority and function actually charge, so that the intercompany hourly rate isn't just made up or copied unchanged from a previous engagement.
Technical definition
Hourly rate benchmarking is a comparability approach used to price intra-group services on a time-and-materials or fee-per-hour basis, comparing the group's internal rates by role, seniority and function against external market rate data for comparable independent professional or technical services providers, typically applied where the service is project-based or highly variable in scope rather than a steady-state routine function.
Why it matters
Hourly rate structures are common for project-based intra-group services (e.g. internal legal, tax, or engineering support) and, unlike a steady cost-plus arrangement, are especially exposed to being set once and never revisited, drifting away from current market rates as years pass.
How it works in practice
- 01Define the roles and seniority levels performing the chargeable service.
- 02Source external market rate data for comparable independent professionals in the same function and region.
- 03Compare internal proposed rates against the external range for each role.
- 04Adjust internal rates that fall materially outside the observed range.
- 05Refresh the benchmark periodically, particularly for fast-moving markets like technology or legal services.
Worked example
Stale internal legal hourly rates found below market
A group's internal legal team charges subsidiaries EUR 120 per hour for a senior counsel's time on contract review work, a rate set in 2019 and never revised. A 2026 benchmarking exercise against independent mid-sized law firms performing comparable commercial contract work in the same jurisdiction shows a market range of EUR 180-260 per hour for equivalent seniority. The stale internal rate, while conservative from a tax risk perspective in the sense of not overcharging subsidiaries, actually understates the value of the service and risks the internal legal function itself being viewed as under-remunerated relative to what an independent provider would charge, prompting a rate refresh to EUR 200 per hour.
Common mistakes
- Setting an hourly rate once and never benchmarking it again for years.
- Using a single blended rate across very different seniority levels or functions.
- Comparing against internal historical rates rather than external market data.
- No time-recording discipline, making the hours actually charged unverifiable.
Audit red flags
- Hourly rates unchanged for many years despite market rate inflation.
- No time-tracking records supporting the hours invoiced.
- A single flat hourly rate applied regardless of seniority or complexity of work performed.
Documentation & data
Documents to hold
- Role and seniority mapping used in the rate structure.
- External benchmarking data source and comparison analysis.
- Time-recording logs supporting invoiced hours.
Data you need
- External market rate surveys or comparable billing rate data by function and region.
- Internal time-tracking system data by role.
- History of prior rate reviews and adjustments.
Who owns this internally: The function providing the service (e.g. internal legal, engineering) with tax oversight on the rate-setting methodology.
Jurisdiction notes
- OECD
- Chapter II and Chapter VII guidance support hourly-rate or time-based pricing as one valid application of the cost-plus or comparable uncontrolled price approach where project-based comparables exist.
- United States
- IRS practice on intra-group professional service charges places significant weight on contemporaneous time records supporting the hours billed.
Notes by role
Advisors & consultants
Hourly rate benchmarks age faster than cost-plus mark-ups in volatile labour markets (e.g. technology, legal) — build a shorter refresh cycle for these specifically.
In-house tax teams
Insist that the underlying time-recording system is robust before relying on hourly billing for intercompany charges — the rate is only half the evidence needed.
Frequently asked
- Is hourly rate benchmarking a distinct transfer pricing method?
- No — it is an application of comparable uncontrolled price or cost-plus principles to a time-based billing structure, not a separate OECD method in its own right.
- How often should hourly rates be refreshed?
- Annually is common practice for fast-moving professions; every two to three years may be acceptable for more stable, slower-changing service categories.
Sources & status
- Primary source
OECD Transfer Pricing Guidelines, Chapter II (comparable uncontrolled price and cost-plus methods)
OECD, 2022
- Our interpretation
Practical hourly rate benchmarking process
This glossary, 2026
Reference material only, not advice on a specific fact pattern. Reviewed 2026-06-30.
Careers
How this shows up in the job
Understanding hourly rate benchmarking is directly transferable to legal, consulting and engineering internal service pricing roles beyond pure tax teams.
Careers in transfer pricing