Cost vs. Market Approach for Comp Methods

Part of WageProof's complete guide to S-corp reasonable compensation.

At May 2025 Denver median wages, the same S-corp owner comes out at $106,365 under one IRS-recognized method and $142,330 under another. The wages behind both figures sit on published BLS tables an examiner can check, and the lower one is what the Cost Approach returns when it prices the five separate occupations that fill her week, weighted by a time split that comes from her own records.

The Reasonable Compensation Job Aid for IRS Valuation Professionals describes both, along with a third, the Income Approach. Which one you use decides what you can put in front of an examiner who asks where the number came from, and whether that file holds one wage lookup or five.

What the IRS Job Aid says

The Reasonable Compensation Job Aid for IRS Valuation Professionals (dated October 29, 2014, and still posted on irs.gov) lays out three approaches:

1. The Cost Approach, also called the "Many Hats" method, prices the owner's duties one component at a time and adds the pieces up to what replacing her services would cost.
2. The Market Approach asks what an unrelated company would pay a non-owner to do the same job, using outside compensation data for comparable positions.
3. The Income Approach, better known as the Independent Investor Test, asks whether a hypothetical investor would be satisfied with the return left over after the owner's salary is paid.

In the Job Aid's own ranking the Market Approach is "the most commonly used method," the Income Approach comes next, and the Cost Approach is "the least used method." On reconciling the three, the Job Aid says the reconciliation "will generally rest heavily on the market approach (comparison to compensation for similar positions in similar companies)," with the income and cost approaches "used to refine the reasonable compensation amount."

That ranking fits a business where one executive title covers the whole job, and not every small S-corp runs that way. When an owner's week is split across bookkeeping, sales, client delivery, and administration, no one occupation code covers it, and pricing all of those hours at one title's rate puts the bookkeeping and the admin at that title's wage. The Job Aid warns in the same document that adding up the full-time market salary of every role you fill "would distort the amount of total time actually worked," so each role has to be weighted by the hours it genuinely takes.

The Job Aid says of itself that it is "not an official pronouncement of law" and "cannot be used, cited, or relied upon as such," and that it is "current as of the original date of issuance only," so nothing in it binds a court or an examiner. What it does carry is the IRS's own account of the three approaches and of the order its valuation analysts weigh them in, written for the examiners who work these cases.

The legal standard both approaches serve

Treas. Reg. §1.162-7(a) lets a business deduct "a reasonable allowance for salaries or other compensation for personal services actually rendered." Subsection (b)(3) caps that allowance at what "is reasonable under all the circumstances," then adds that reasonable and true compensation "is only such amount as would ordinarily be paid for like services by like enterprises under like circumstances."

The regulation describes a wage that already exists in the open market for the work being done, without naming an occupation code or a percentile. The Market Approach estimates that wage by pricing the whole role against comparable positions, while the Cost Approach breaks the role into duties first and asks what each one commands on its own.

The Cost Approach ("Many Hats")

Everything downstream depends on the time split. Each occupation's wage enters the total only in proportion to the hours assigned to it, which is why the calculation starts with the calendar and only then reaches for wage data.

1. List the tasks you actually perform in the business: bookkeeping, sales, client delivery, HR, marketing, and anything else that lands on your desk.
2. Estimate how your time divides across them, for example 25% bookkeeping, 20% sales, 30% client work, 15% operations, 10% admin.
3. Match each task to a BLS Occupational Employment and Wage Statistics (OEWS) occupation code. Bookkeeping maps to SOC 43-3031, "Bookkeeping, Accounting, and Auditing Clerks." OEWS covers roughly 830 detailed occupations, so most tasks map to a published code with its own wage table.
4. BLS wage data for that occupation in your county's BLS wage area is applied (or a broader or older BLS figure where the local one is not published), adjusted for your experience level. OEWS publishes estimates for the nation, all states, and about 530 metropolitan and nonmetropolitan areas, with percentile wages (10th, 25th, median, 75th, 90th) so a number can be matched to experience.
5. Multiply each occupation's wage by the share of your time that task takes, which gives the weighted annual wage for that line.
6. Add the weighted wages together for the reasonable compensation figure.

Take an owner in Denver who spends 30% of her time on bookkeeping, 25% on business development, 20% on project management, 15% on client consulting, and 10% on administration. That produces five separate wage lookups, one per task, each drawn from Denver BLS data for the relevant occupation and experience level and weighted by its share of the year, so the 30% bookkeeping share carries 30% of a bookkeeper's annual wage into the total. At May 2025 Denver median wages, with bookkeeping priced as Bookkeeping, Accounting, and Auditing Clerks (SOC 43-3031, $57,510 a year), business development as Sales Managers (11-2022, $181,580), project management as Project Management Specialists (13-1082, $116,740), client consulting as Management Analysts (13-1111, $102,620) and administration as Secretaries and Administrative Assistants (43-6014, $49,760), the weighted total comes to $106,365.

Administrative and operational work takes hours that pay less than the owner's headline professional skill, so the 30% bookkeeping share enters the total at bookkeeper wages instead of the manager wage a single-title lookup would apply to the whole year. Enough of the week sits in those lower-paid categories to pull the average well below what one occupation code would have produced, and FICA is charged on the smaller total.

A time split you can support from a calendar or a billing system is worth recording while the year is still running, because the weighting is the step that gives way first when it is reconstructed from memory. Anyone can pull the BLS table behind the wage half of each line, but nothing outside your own records corroborates the percentage you assigned to it. For the Denver owner that is five percentages (30, 25, 20, 15 and 10), and a CPA or an examiner can ask you to source every one.

The Market Approach

1. Name the occupation that best fits the role as a whole. For a lot of owner-operators that is "General and Operations Managers," SOC 11-1021.
2. BLS wage data for that occupation in your county's BLS wage area is pulled
3. Your experience level decides which percentile applies. Entry-level might sit at the 10th percentile; twenty years in the same trade might justify the 90th.

For the same Denver owner, if her role maps best to "General and Operations Managers," the lookup is BLS data for that occupation in the Denver metro area. At the 50th percentile, the May 2025 figure is $142,330.

Every hour of the year gets priced at the rate of the one occupation named, so the bookkeeping and the hours of email that fill the gaps around billable work are billed at management wages, and for this owner the number comes in higher. A single lookup carries no weighting, so the hours below management level never get priced at their own rate. That makes it a cruder measure than the Cost Approach's task-level detail, and cruder the further a week strays from the occupation named. What it has going for it is a short chain an examiner can check: the occupation code, the area and the percentile all sit on one published BLS table, and the only other input is the hours she works.

The Income Approach

The Income Approach uses no wage data, only the Independent Investor Test, articulated in Elliotts, Inc. v. Commissioner, 716 F.2d 1241 (9th Cir. 1983), and adopted by Judge Posner in Exacto Spring Corp. v. Commissioner, 196 F.3d 833 (7th Cir. 1999), which asks whether a hypothetical investor in the company would look at the return left after the owner's salary and still call that salary reasonable. In Exacto, investors who could have expected a 13% return were instead earning about 20% even after the owner's pay, and the court treated that as a presumption that the compensation was reasonable.

The Income Approach can be applied correctly only when the Fair Market Value of the company is available for each year being examined, which is why the Job Aid calls the Market Approach generally more useful. A tax professional can layer it on top of a wage-based calculation for a stronger file, and the methodology page walks through how that calculation runs.

Choosing between Cost and Market

Name the one job title an outside company would hire to fill your seat, then ask what that hire would still need beside them. If the answer is nobody, as it can be for the owner of a solo licensed practice, one occupation code really does describe the role. When the answer instead runs to a bookkeeper and an office manager, you are describing several part-time roles, each with its own occupation code and its own wage, and pricing them one line at a time is what the Cost Approach exists to do. It can land above or below what a single title produces, depending on which occupations fill the week (for the Denver owner it lands about $36,000 below), and it only works where every role is weighted by the hours it really takes. Five full-time salaries added together is the distortion the Job Aid names.

Running both approaches

The Job Aid's own framing is that there may not be a single right answer: "What amount constitutes Reasonable Compensation might best be viewed as a range because of the interpretive nature of the issue." Which occupation code matches a task and which percentile reflects a decade of experience are both judgment calls, and a reported range keeps both calls on the page where a single figure would hide them.

Reconciling the three approaches against one another before settling on a figure is how the Job Aid tells examiners to work, and a taxpayer can copy that. With $106,365 from the Cost Approach and $142,330 from the Market Approach on the same file, a salary between the two sits inside a documented range with two calculations behind it, and two years later you can hand over both analyses and the weighting behind each. Because the Job Aid says the reconciliation "will generally rest heavily on the market approach," the file should also say why the salary sits where it does in that range. The proficiency-to-percentile mapping is documented too, so your CPA can show what the number would have been one proficiency level down and say why the level you claimed is the one that fits.

How WageProof handles this

WageProof runs all three IRS-recognized approaches: Cost, Market, and Income. You choose the methodology when you start a report, based on which one fits the business.

On the Cost Approach you pick your tasks from a catalog of 40+ common business functions or search for a custom occupation, allocate your time across them, and rate your proficiency at each. Each task is then matched to BLS wage data for your county's BLS wage area and experience level. The Market Approach asks only for one occupation and a proficiency level before pulling the corresponding BLS figures, while the Income Approach, open to CPAs and tax professionals at every plan level, runs on company financial performance data.

Every wage figure in the report traces back to a published BLS source, so an examiner can check one against bls.gov directly. The appendix carries the occupation codes, the geographic area, the data year, and the proficiency-to-percentile mapping that shows which percentile was used and why. Each report uses the OEWS release for its tax year, and the latest release is the May 2025 estimates, published by BLS on May 15, 2026; when your tax year runs later than the latest survey, wages are projected forward with the BLS Employment Cost Index.

The methodology page sets out the full calculation step by step. If you would rather see the output first, the sample report shows a printed appendix.