By Curt Roese | Published: September 7, 2026 | Last updated: September 7, 2026
The value of your expertise in retirement is the market rate someone would pay for the professional judgment you built over 30 to 40 years, calculated the same way you would value any other asset on a balance sheet. Most retirement plans assign this number a value of zero, even though it can cut portfolio withdrawals by hundreds of thousands of dollars.
This article walks through a five-number framework for putting a real dollar figure on that expertise: what you saved, what you could still earn, what retirement actually costs, how a modest income changes the math, and the specific number at which your portfolio stops being your only income source.
Why Isn't Your Expertise on Your Retirement Balance Sheet?
Your expertise isn't on your retirement balance sheet because most retirement plans only rigorously calculate one number, your portfolio balance, and treat it as the sole income engine beyond Social Security or a pension.
That assumption feels conservative and responsible. For professionals with decades of specialized judgment in HR, finance, operations, technology, or healthcare, it is actually the riskiest assumption in the plan, because it makes your entire retirement security dependent on a single distribution source.
You would not leave a rental property or a business interest off a net worth statement because you might not sell it. Decades of professional expertise deserve the same treatment. It did not stop being valuable on your last day of work. It stopped being monetized.
What Are the Five Numbers Every Retirement Plan Should Include?
The five numbers are the Portfolio Number, the Expertise Number, the Gap Number, the Replacement Number, and the Walk-Away Number, and each one builds directly on the last.
Most retirement plans stop at the first number. Working through all five changes what the retirement picture actually looks like.
| Number | What It Measures | Why It Matters |
|---|---|---|
| Portfolio Number | What you've saved (401k, IRA, brokerage) | The only number most plans calculate rigorously |
| Expertise Number | What you could still earn from your skills | The asset most plans assign a value of zero |
| Gap Number | Desired spending minus guaranteed income | Makes portfolio concentration risk visible |
| Replacement Number | How expertise income shrinks portfolio withdrawals | Shows the leverage of even modest income |
| Walk-Away Number | The expertise income at which the gap reaches zero | The threshold where the portfolio becomes optional |
Imagine a former HR executive named Susan, 65, with $1.5 million saved and $40,000 in annual Social Security. This is a hypothetical used to illustrate the framework, not a projection for any specific reader's situation.
How Do You Calculate Your Portfolio Number?
Your Portfolio Number is simply what you've saved across your 401(k), IRA, and brokerage accounts, the figure your advisor already tracks, projects, and stress-tests against withdrawal scenarios.
The problem isn't the number itself. The problem is when it becomes the only income engine in the plan, leaving no redundancy if the market underperforms or spending runs higher than expected.
Consider Susan's situation. She wants to spend $100,000 a year and has $40,000 in guaranteed Social Security income. Under a traditional plan, her portfolio needs to cover the remaining $60,000 annually, roughly $1.5 million in withdrawals over 25 years before accounting for market volatility.
How Do You Calculate Your Expertise Number?
Your Expertise Number is the market value of what you could still earn from your professional knowledge, calculated the same way you'd value any income-producing asset, not an argument for working forever.
Current market data supports real dollar ranges here. General HR consulting typically runs $85 to $250 an hour, while fractional executive engagements commonly run $2,000 to $24,000 a month in retainer form, according to current industry rate data from multiple 2025–2026 sources.
The question this number forces is simple: can you state what your knowledge is worth per hour in the open market? If you cannot answer that, your retirement math is incomplete, because you're planning around one income source while ignoring another you already own.
How Do You Calculate Your Gap Number?
Your Gap Number is the difference between what you want to spend each year and what your guaranteed income sources actually provide, and it's the number that makes portfolio concentration risk visible.
Retirees consistently underestimate how much their spending shifts once retirement begins. LIMRA's Secure Retirement Institute found that 26% of retirees said their basic living expenses ran higher than expected, and roughly four in ten underestimated healthcare and long-term care costs specifically.
For Susan, the Gap Number is $60,000, her $100,000 in desired spending minus $40,000 in Social Security. In a traditional plan, that entire amount comes from portfolio withdrawals every year, regardless of market conditions.
How Much Does a Little Expertise Income Actually Change the Math?
A modest amount of expertise income can cut required portfolio withdrawals dramatically, because every dollar earned is a dollar the portfolio no longer has to distribute.
Imagine Susan takes on 10 hours a week of HR advisory work at $60 an hour, below her market rate, generating $30,000 a year. Her Gap Number drops from $60,000 to $30,000, cutting her required annual withdrawal in half.
Over a 25-year retirement, that directional difference compounds into roughly $750,000 less drawn from the portfolio, according to the framework's own illustration. This is a cash flow illustration, not a precision projection, since actual outcomes depend on taxes, returns, and inflation.
The preserved capital keeps compounding, and sequence-of-returns risk drops substantially since less is being withdrawn during any given downturn.
What Is the Walk-Away Number, and How Do You Calculate Yours?
Your Walk-Away Number is the specific annual expertise income at which your Gap Number reaches zero, the point where your portfolio stops being a distribution source entirely and becomes a pure growth asset.
For Susan, that number is $60,000. If her expertise income fully covers the gap between Social Security and her desired spending, the portfolio never needs to be touched for ongoing expenses.
Most retirement plans answer one question: do I have enough saved to stop working? The Walk-Away Number adds a second: do I earn enough from expertise to make that savings balance irrelevant to my monthly cash flow?
When I've reviewed cases built this way, the value isn't that everyone should chase their full Walk-Away Number. It's that knowing the number turns a vague feeling into an actual decision.
Should You Aim for Full Replacement or Partial Replacement?
Whether to aim for full replacement (the Walk-Away Number) or partial replacement (the Replacement Number) depends on how much you want your portfolio to stay untouched versus simply under less pressure.
| Approach | Target | Outcome |
|---|---|---|
| Partial replacement | Cover some of the Gap Number | Reduces withdrawal rate; portfolio still distributes, but less |
| Full replacement (Walk-Away Number) | Cover the entire Gap Number | Portfolio becomes a pure growth and reserve asset |
Neither answer is correct for everyone. Some professionals want the full Walk-Away Number as a target. Others are satisfied with the Replacement Number's partial reduction and prefer more time away from client work. The framework simply makes the trade-off visible instead of leaving it unexamined.
Frequently Asked Questions
How do I calculate what my professional expertise is actually worth?
Research current market rates for consulting, fractional, or advisory work in your specific field and seniority level. General consulting commonly runs $85 to $250 an hour, with fractional executive retainers running from roughly $2,000 to $24,000 a month depending on scope.
What's the difference between the Gap Number and the Walk-Away Number?
The Gap Number is what retirement actually costs beyond guaranteed income. The Walk-Away Number is the specific expertise income needed to cover that entire gap, at which point your portfolio no longer needs to distribute at all.
How much retirement income can part-time consulting realistically replace?
It depends on your rate and hours, but even 10 hours a week at a modest rate can cover a meaningful share of a typical income gap, as illustrated in the Replacement Number calculation.
Do I have to keep working to use the Walk-Away Number concept?
No. The concept is about calculating an asset's value before deciding whether to use it, the same way you would value any other asset. You can choose partial replacement, full replacement, or none at all once you know the number.
How much do senior consultants actually charge per hour in 2026?
Current market data shows general consulting rates commonly between $85 and $250 an hour, with fractional executive rates running higher, often $100 to $300 an hour or in monthly retainer form.
Why do most retirement plans only calculate my portfolio and nothing else?
Portfolio balances are straightforward to model with standard software and withdrawal-rate assumptions. Expertise income is harder to quantify because it depends on your specific field, so most planning tools and advisors leave it out entirely.
The Bottom Line on the Value of Your Expertise in Retirement
Decades of professional judgment are a real, calculable asset, and leaving it off your retirement plan concentrates all your risk in a single distribution source. The five-number framework, Portfolio, Expertise, Gap, Replacement, and Walk-Away, turns that asset into something you can actually plan around.
If you haven't run your own gap calculation yet, that's the natural starting point before applying this framework. Our Gap, Bridge, Runway framework walks through exactly how to calculate it with real numbers.
Know your own five numbers before you finalize any retirement plan. Model your portfolio and income scenarios together so the math reflects your actual situation. Try it yourself: Boldin
Next Steps
Calculate your own Expertise Number this week: research current market rates in your specific field, and write down what an hour of your judgment is actually worth in the open market.
Curt Roese is a CPA and former CFO with over 40 years of financial leadership experience, including serving as CFO of Fountainhead Commercial Capital and co-founding Westmont Homes. He holds an M.S. in Entrepreneurship from the University of Florida (December 2025) and founded Retirepreneur to help professionals 55 and older build phased, financially sound transitions out of full-time work. Read more About Curt.