Consider this scenario. You are transitioning into retirement, and a client wants to keep you on contract two days a week. The rate is good, the work is familiar, and the income lands on top of a retirement plan that already works without it. Most people say yes, and most people should. However, the engagement still has to survive contact with the tax code.
Marginal tax rates never exceed 100%, so an extra dollar of consulting profit almost never leaves you with less money. The exceptions are called cliffs, and a cliff can cost several thousand dollars for the single dollar that triggered it. Unfortunately, two of them sit squarely inside the income range where retiring executives often land. Pay attention and make sure you aren’t caught in these traps.
The Benefits of Consulting Into Retirement
Three benefits deserve real weight before the risks arrive. Each one gets overlooked when the tax cost dominates the conversation, and each one has value that survives the arithmetic that follows.
- Portfolio protection. Earned income lets you defer withdrawals in the years your portfolio can least afford them, which matters most when a market decline hits early in retirement. You lock in the loss when you sell shares at depressed prices to cover living costs, which does lasting damage to a portfolio you have already started drawing down. When consulting profit covers those costs instead, the portfolio stays invested and recovers untouched.
- Access to a retirement plan. No retiree without earned income can open a solo 401(k), so consulting profit reopens a door that would otherwise be closed. The 2026 limits are generous, beginning with an elective deferral of $24,500. On top of that, a catch-up contribution adds $8,000 at 50 or older, or $11,250 for those who turn 60 through 63 during the year. All told, total annual additions can reach $72,000. A one-person practice can choose among several plan structures to capture that room, though the solo 401(k) usually allows the largest contribution of any of them.
- Purpose. The financial case is the easy one to model, yet the lifestyle shift that retirement brings is difficult to quantify on a spreadsheet. Structured work softens the transition for a lot of people, and its value is measured in happiness and mental health rather than dollars.
The first two benefits are financial, and both come with tax implications that the paycheck itself never shows. That is where the decision gets complicated.
Three Taxes on Consulting Income in Retirement
Employment income reaches you after expected taxes have already been deducted, and the arithmetic happens somewhere you never see. On the other hand, consulting income reaches you without deductions, although three separate taxes hit before income tax is applied. Two of the three rarely come up when your compensation gets negotiated.
Self-Employment Tax Hits First and Hardest
Employees split Social Security and Medicare taxes with an employer, who covers half the bill and remits the rest. A consultant has no such partner and owes the entire amount.
The self-employment tax rate is 15.3%, and it is applied to 92.35% of your net earnings. Of that, 12.4% funds Social Security and it’s capped at the ‘wage base,’ which the Social Security Administration set at $184,500 for 2026. The remaining 2.9% funds Medicare and isn’t capped. The one piece of relief comes at tax time, when you deduct half of what you paid, which lowers taxable income.
Your marginal cost per dollar of consulting profit therefore runs highest at the start, when the full 15.3% applies. It falls once you clear the wage base and the 12.4% share stops accruing.
The Net Investment Income Tax Still Matters
Consulting profit counts as earned income, so it avoids the 3.8% Net Investment Income Tax. That tax instead falls on interest, dividends, capital gains, and similar passive income.
The key point to understand here is that the tax applies once modified adjusted gross income exceeds $250,000 for joint filers, a threshold Congress has never indexed for inflation. If your consulting profit lifts adjusted gross income across the $250,000 line, investment income risks getting dragged into a tax it previously escaped. You are not taxed on the work, but you could be taxed on the portfolio, because of the work.
The Additional Medicare Tax
A third tax, the 0.9% Additional Medicare Tax, lands on earned income above $250,000 for joint filers. For a couple already above that line, a $60,000 consulting engagement adds roughly $500 on top of everything else.
The amount is small, but the pattern behind it is the real point. Two of these three taxes start at $250,000, and Congress has never adjusted that figure for inflation. Income that felt safely clear of these taxes a decade ago can trip all three today.
Why Consultants Sometimes Lose the 20% Pass-Through Deduction
The Section 199A qualified business income deduction lets many pass-through owners deduct 20% of business profit. The One Big Beautiful Bill Act made that deduction permanent in 2025, so it no longer carries an expiration date. However, consultants receive it on different terms.
Federal law classifies consulting as a specified service trade or business, the same category that covers health, law, accounting, and financial services. That label only matters once your income climbs past a certain point. Below that point, consultants take the full 20% like anyone else.
For 2026, IRS Revenue Procedure 2025-32 puts that point at $403,500 of taxable income for joint filers. From there the deduction shrinks across a phase-out range and disappears completely at $553,500. Single and head-of-household filers hit those same walls at $201,750 and $276,750.
A second limitation works inside that same range. Once income passes $403,500, the deduction is also capped by the wages your business pays, and the two limits phase in together across the band. Unfortunately, a solo consultant with no employees pays no wages, so that wage cap is often zero. Both forces pull in the same direction, which is why the deduction falls away faster than the phase-out numbers alone would suggest.
Two Income Cliffs That Can Cost You Thousands
Self-employment tax, investment income tax, and the vanishing deduction all take a share of what you earn. Two other thresholds do something worse, because they take more than the dollar that triggered them.
The Medicare IRMAA Staircase
The Income-Related Monthly Adjustment Amount [IRMAA] raises your Medicare Part B and Part D premiums once modified adjusted gross income crosses a threshold. The 2026 tiers and premium amounts took effect in January.
Unlike a tax bracket, IRMAA does not phase in gradually. Instead, one dollar over a threshold triggers the entire surcharge for that tier.
The cost of that single dollar depends on which threshold you crossed. The CMS premium tables released in November 2025 set the amounts a married couple pays when both spouses are enrolled. At the top tier, a couple pays $13,872 a year in surcharges alone. Only about 8% of Part B enrollees pay IRMAA at all, which makes this a problem specific to higher-income households.
The ACA Premium Tax Credit Cliff
If you retire before 65 and buy coverage on the individual market, a second and far steeper cliff applies. This one does not climb in tiers the way Medicare’s does. Instead, the entire loss lands at once.
The enhanced premium tax credits enacted in 2021 expired on December 31, 2025, and Congress did not extend them. As a result, the original structure returned on January 1, 2026, and with it the hard eligibility cap at 400% of the federal poverty level.
For coverage year 2026, Rev. Proc. 2025-25 sets the required contribution at 9.96% of household income for anyone between 300% and 400% of poverty. The 2025 HHS poverty guidelines govern 2026 coverage, and they put 400% of poverty at $62,600 for one person and $84,600 for a household of two.
Earn one dollar more and the credit falls to zero. The subsidy does not taper across the threshold the way a tax bracket does, so a household at $84,601 receives nothing at all.
KFF reports that the national average unsubsidized benchmark silver premium for a 60-year-old in 2026 is $15,914. By its estimate, a 60-year-old earning $65,000 now pays $10,389 more each year than they did with the enhanced credits in place.
One more rule turns a bad outcome into a worse one. Advance credits paid to your insurer during the year must be reconciled at filing, and the repayment caps that used to limit the damage are gone. The IRS confirms that for tax years after 2025 those caps no longer apply. Take a December engagement that pushes you past the line, and you could repay every dollar of credit you received for the entire year.
How These Estimates Were Calculated
Both examples assume a married couple filing jointly, with federal tax only and no state income tax. The consulting work runs as a sole proprietorship with no employees, no wages, and no qualified property. Tax parameters come from Revenue Procedure 2025-32, and Medicare surcharges come from the CMS tables. The older couple holds $150,000 of other ordinary income, of which $30,000 is investment income, plus $72,000 of Social Security. The younger couple holds $70,000 of income and buys a benchmark plan priced at the national average, which varies substantially by state. Marginal rates exclude IRMAA, which is treated separately because it arrives two years later.
Your own numbers will differ, sometimes substantially, and an experienced advisor can help you understand the calculations.
When Consulting Income Costs More After Age 65
The tax cost of consulting does not climb in a straight line. For a couple already on Medicare, the marginal federal rate on each new dollar of profit moves up and down across the income range. That pattern matters more than any single rate, and the chart below traces the path.
For a couple aged 66, the marginal federal cost of the next dollar of consulting profit rises, falls, and rises again. Notably, the peak sits near the middle of the range rather than at the top of it.
The first $42,000 of profit costs about 30.5%, and between roughly $42,000 and $74,000 the rate climbs to 35.5% due to the Net Investment Income Tax. It applies once consulting adjusted gross income exceeds $250,000, though it never touches the consulting profit itself.
The rate then falls back to 32%. Near $200,000 of profit, it drops again to 21.6%, the point where the Social Security portion of self-employment tax caps out. Those are the cheapest dollars the couple will earn.
Above roughly $240,000, the pass-through deduction begins to phase out, and the rate climbs to a peak of 48.2% near $275,500 of profit. Each dollar in that band costs more than twice what the dollars just below it cost.
On income tax alone, consulting never stops paying, and the marginal cost simply doubles somewhere around $240,000 of profit. Unfortunately, a couple who does not know that will accept the $275,000 engagement on the same terms they accepted the $200,000 one.
The trade turns genuinely negative only at a cliff. Cross $218,000 by one dollar, and a Medicare couple owes $2,296.80 two years later. At a 21.6% marginal rate, they need $2,930 of additional profit to break even on that dollar. At 48.2%, they need $4,434.
When a Consulting Job Leaves an Early Retiree Worse Off
The picture changes sharply before Medicare eligibility. A retiree who buys marketplace coverage faces a subsidy cliff steep enough to turn a paying engagement into a net loss. The chart below shows where consulting profit starts working against an early retiree, and where it recovers.
Consider a couple aged 60, retired, with $70,000 of income that buys coverage through the marketplace. Their premium tax credit is around $24,856. Consulting profit of $15,700 lifts their household income to $84,600 and leaves the credit intact. That engagement nets them roughly $10,154 after tax and premiums.
However, one more dollar erases $23,402 of credit. The work has not changed, the hours have not changed, and yet the household now pays the full unsubsidized premium for the year. To recover it, they need enough additional profit to cover the loss after tax. Break-even arrives at about $32,300 of profit.
Between $23,402 and $32,300 sits a dead zone roughly $16,600 wide. The result: any engagement paying $16,000 to $32,000 of net profit leaves this couple worse off than turning the work down. In this scenario, a $30,000 consulting engagement could actually cost them $1,771. They would do the work and end the year behind where they started.
Four Ways to Protect Consulting Income From Taxes
Four moves can help to keep a good engagement from tripping a cliff.
- Fund a solo 401(k) first. For the couple at 60, a $40,000 engagement without a plan nets $5,923. The same engagement with a $35,750 deferral nets $34,070, because the contribution pulls household income back under the poverty threshold and restores the credit. That single decision moves $28,147, so the contribution functions as threshold management here and the retirement savings are almost incidental.
- Project your income before you sign. IRMAA and the premium tax credit both key off modified adjusted gross income, and both punish a miss by a single dollar. Consulting profit also raises your provisional income, which determines how much of your Social Security benefit becomes taxable.
- Move an invoice when it makes sense. A December engagement billed in January shifts the income into another year.
- Use qualified charitable distributions. If you are 70½ or older, a gift sent directly from an IRA to a qualified charity stays out of adjusted gross income entirely. The 2026 limit is $111,000 per person, and the distribution counts toward any required minimum you owe that year.
Two related provisions deserve brief mention. The new senior deduction phases out completely at $250,000 of income for joint filers, so households at these income levels will not receive it. The Social Security earnings test also withholds benefits from claimants below full retirement age, though the withheld amounts return through a higher benefit later. The timing of the benefit shifts, while the lifetime total holds steady.
How the Two-Year IRMAA Lookback Works
IRMAA runs on a two-year lookback. The consulting income you earn in 2026 sets your Medicare premium in 2028. You will make the decision long before you feel its consequence, and by the time the surcharge appears, the engagement that caused it will be a memory.
That two-year lag gives you room to plan, provided you use it. Every threshold is published in advance and knowable today, and every one of them is avoidable with a projection made before you accept the work.
Consulting in retirement can be an excellent decision. It protects your portfolio, opens a retirement plan you could not otherwise use, and gives structure to years that need it. It becomes a poor decision only when the numbers aren’t considered first. Before you accept your next engagement, work with an experienced financial advisor to model how the added income moves your thresholds.
Plan Your Consulting Income With Meld Financial
At Meld Financial, our team of tax, legal, and investment professionals work together to weigh a consulting engagement against your full financial picture. We can project how the added income affects your Medicare premiums, your health coverage, and your pass-through deduction. From there, we help you time the work and fund a retirement plan, so a good opportunity stays a good decision.
This kind of coordination is just one part of our comprehensive wealth management program, Financial Fingerprint®. We developed this plan over decades of helping clients reach their financial goals, and it is tailored to your specific needs while adapting to match changing circumstances. With Financial Fingerprint®, you can balance every part of your financial life, from consulting income today to a secure retirement tomorrow.
Contact us today to discuss your situation and get started with Financial Fingerprint®.
