Capital Gains Harvesting Strategy High Income Clients

Capital Gains Harvesting Strategy High Income Clients

A capital gains harvesting strategy high income clients actually pay for is not a spreadsheet. It is a repeatable, year-round realization plan. For 2026, the stack of long-term rates, the 3.8% net investment income tax, and Medicare surcharges creates real dollars you can defend. This guide shows tax pros how to build, price, and deliver that work as advisory revenue.

Table of Contents

• Key Takeaways
• What Is a Capital Gains Harvesting Strategy for High Income Clients?
• What Are the 2026 Numbers You Must Model?
• How Do NIIT and IRMAA Change the Math?
• When Should Clients Sell, Borrow, or Give?
• How Do You Price This as an Advisory Engagement?
• What Risks Should You Document?
• Partner Spotlight
• Uncle Kam in Action
• Related Resources
• Next Steps
• Frequently Asked Questions

 

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Key Takeaways

• For 2026, long-term gains are taxed at 0%, 15%, or 20%.
• The 3.8% NIIT applies above $250,000 MAGI for joint filers.
• Medicare IRMAA uses a two-year lookback, so gains bite later.
• Section 1014 step-up can erase a lifetime of unrealized gain.
• Realization timing work prices well as a recurring advisory engagement.

What Is a Capital Gains Harvesting Strategy for High Income Clients?

Most firms treat realized gains as an input. The 1099-B arrives in February, and the return reports what already happened. However, the real value sits twelve months earlier. Your client chose a sale date, a lot, and an amount. Each choice moved the final number.

Therefore, a capital gains harvesting strategy high income clients value is really a calendar discipline. You project taxable income. Then you identify the room left under each threshold. Finally, you tell the client exactly how much to realize, and when.

Gain Harvesting Versus Loss Harvesting

These are two different tools. Loss harvesting sells depreciated positions to create losses. Those losses offset gains first. After that, up to $3,000 of net capital loss offsets ordinary income each year. Any remainder carries forward.

Gain harvesting does the opposite. It deliberately realizes gain in a low-income year to reset basis upward. For example, a client in a gap year between a business sale and required minimum distributions may have unusual room. Consequently, realizing gain now avoids a worse rate later.

Why High Income Changes the Playbook

Below the thresholds, the planning is simple. Above them, everything stacks. A high earner can face the 20% long-term rate plus the 3.8% net investment income tax from the IRS. That is roughly 23.8% federal before any state tax.

Moreover, every dollar of loss you harvest against that stack saves close to 24 cents. In addition, Medicare surcharges and phase-outs ride on the same modified adjusted gross income (MAGI, the income measure used for several thresholds). As a result, one sale can trigger three separate costs.

What Are the 2026 Numbers You Must Model?

Start with the preferential rate brackets. The 0% band runs to roughly $98,900 of taxable income for joint filers in 2026. For single filers, the figure is about $48,475. Above those points, the 15% rate applies until the 20% breakpoint.

Verify current figures at IRS Topic No. 409 on capital gains and losses before you publish any client deliverable. Inflation adjustments arrive by revenue procedure, and firms that cite stale numbers lose credibility fast.

2026 Reference Table for Realization Planning

2026 Item	Threshold or Rate	Planning Use
0% long-term rate ceiling (MFJ)	About $98,900 taxable income	Gap-year gain harvesting
0% long-term rate ceiling (single)	About $48,475 taxable income	Basis reset for heirs and students
Top long-term rate	20%	Spread sales across years
Net investment income tax	3.8% above $250,000 MAGI (MFJ)	Loss harvesting leverage
NIIT threshold (single)	$200,000 MAGI	Widow and widower planning
Net capital loss against ordinary income	$3,000 per year	Carryforward tracking
Estate basic exclusion	$15,000,000 per person	Hold-to-step-up analysis

Note that the NIIT threshold is not indexed for inflation. Consequently, more clients cross it every year without any change in behavior. That drift alone creates annual advisory conversations.

The Charitable Levers Worth Modeling

Two 2026 items deserve attention. First, the qualified charitable distribution (QCD) cap for IRA owners aged 70 and a half sits near $111,000 per person. Second, a new floor applies to charitable itemized deductions for individuals. Only amounts above 0.5% of adjusted gross income count.

Therefore, bunching matters more than it used to. Small annual gifts now lose part of their value. Larger, concentrated gifts clear the floor more efficiently. Review IRS guidance on charitable contribution deductions before you build a bunching schedule.

How Do NIIT and IRMAA Change the Math?

Here is the part most prep-only firms skip. A realized gain raises MAGI. Higher MAGI then raises Medicare Part B and Part D premiums through the income-related monthly adjustment amount (IRMAA, a Medicare surcharge). Because the Social Security Administration uses a two-year lookback, a 2026 sale shows up in 2028 premiums.

For a Medicare-age couple, crossing a high IRMAA band can add several thousand dollars for that year. In addition, the surcharge is a cliff, not a phase-in. One dollar over the line triggers the full step. You can review the official bands at the Social Security Administration premium page.

A Worked All-In Cost Example

Assume a joint-filing couple, both on Medicare, with $260,000 of other 2026 income. They need $150,000 of spendable cash. Their legacy stock carries basis equal to 10% of value. Watch what happens when they simply sell.

Step	Amount
Stock sold to net the cash	About $180,500
Long-term gain realized	About $162,500
Federal tax at 15% plus 3.8% NIIT	About $30,500
Resulting MAGI	About $422,500
Added Medicare cost two years later	Roughly $10,400 for the couple
All-in federal plus Medicare drag	Above $40,000

Now add state tax. In California or New York, the same transaction adds a meaningful layer. In Florida, Texas, or Washington, it does not. Consequently, residency is a planning variable, not a footnote.

This is exactly the kind of analysis that justifies a planning fee. Deepen your technical library with this capital gains tax resource hub for tax professionals before your next client review.

When Should Clients Sell, Borrow, or Give?

Your clients rarely have one option. They have four. Selling realizes tax now. Borrowing against the portfolio raises cash with no recognized income. Giving appreciated shares removes the gain entirely. Holding until death resets basis under Internal Revenue Code Section 1014.

The Four-Path Comparison

Path	Tax Recognized	MAGI Impact	Main Risk
Sell shares	Full gain now	High	NIIT plus IRMAA cliff
Borrow against portfolio	None	None	Margin call, rising rates
Gift appreciated shares	None to donor	Lowers AGI if deductible	0.5% AGI floor, appraisal rules
Hold to step-up	None ever	None	Concentration, law change

The Breakeven Question Nobody Models

Borrowing is not free. Interest accrues until the loan is repaid. Therefore, the strategy only wins when the avoided tax exceeds the carried interest. Two variables decide it: the borrowing rate and the years until the step-up.

At a 7% borrowing rate on $150,000, interest costs roughly $10,500 in year one. The avoided federal tax and Medicare drag in the example above exceeded $40,000. As a result, the borrow path stays ahead for roughly four years. Beyond that, the math narrows quickly.

Borrowing Rate	Annual Interest on $150,000	Approximate Breakeven Horizon
5%	$7,500	About 5 years
7%	$10,500	About 4 years
9%	$13,500	About 3 years

Use simple, transparent assumptions. Clients trust math they can follow. In addition, state the assumptions in writing so the file defends itself later. Firms serving high-net-worth individuals with advanced strategies make this a standard deliverable.

How Do You Price This as an Advisory Engagement?

 

 

Here is the uncomfortable truth about prep pricing. A complex 1040 with a Schedule D might bill $900. The same client, with realization planning, generates far more value. Yet many firms never charge for the second service.

Prep Fees Versus Advisory Fees

Service	Typical Fee	Delivery Window	Client Outcome
1040 with investment schedules	$700 to $1,500	January to April	Compliance only
One-time realization plan	$3,500 to $7,500	Spring or summer	Documented savings
Recurring advisory retainer	$5,000 to $15,000 yearly	Quarterly touchpoints	Multi-year coordination

Twenty retainer clients at $10,000 produce $200,000 of recurring revenue. Furthermore, that revenue arrives outside the busy season. Your capacity problem shrinks while your margin grows.

Packaging the Deliverable

Clients pay for clarity, not spreadsheets. Your deliverable should include a projection, a threshold map, a recommended realization amount, and a calendar. Add a written risk disclosure. Then present it live.

Scenario modeling across the 1040, the 1120-S, and K-1 flows is where errors hide. Using entity-aware tax planning software lets you test realization timing against entity income in one view. Consequently, your recommendation holds up when the client’s business has a strong year.

For firms building this service line, our tax advisory service framework maps the engagement from discovery through quarterly review.

What Risks Should You Document?

Strong advisory work names its own weaknesses. That builds trust and protects your firm. Four risks appear repeatedly in capital gains engagements.

Wash Sales and Substantially Identical Securities

Loss harvesting fails if the client repurchases a substantially identical security within 30 days before or after the sale. The rule also reaches purchases inside an IRA. Therefore, you must coordinate across every account, including a spouse’s. Review the details in IRS Publication 550 on investment income and expenses.

Margin Calls and Forced Liquidation

Borrowing against appreciated stock looks clean until markets fall. A 30% to 40% drawdown can push the loan-to-value ratio past the maintenance threshold. The lender then forces a sale. Ironically, that creates the taxable event the plan was designed to avoid, at the worst possible price.

Accordingly, keep initial loan-to-value conservative. Many practitioners stay near 25% to 30%. In addition, remember that borrowing rates are usually variable. The SEC investor bulletin on securities-backed lines of credit explains the mechanics well.

Substantiation Failures

Charitable gifts of appreciated stock fail on paperwork more often than on law. Clients need a contemporaneous written acknowledgment. Noncash gifts above $500 require Form 8283. Gifts above $5,000 generally need a qualified appraisal unless the security is publicly traded.

QCDs have their own trap. The distribution must go directly from the IRA trustee to the charity. If the check reaches the client first, the exclusion disappears. Build a checklist and own it.

Legislative Risk

The step-up in basis has been a recurring target in tax proposals. A hold-forever plan carries political risk. Say so plainly. Then build flexibility into the recommendation so the client is not trapped if the law shifts.

Partner Spotlight: A Solo Practitioner Rebuilds Her Revenue Mix

Here is an illustrative practitioner example. Consider a solo EA running a 210-return practice in the Midwest. Roughly 30 of her clients hold concentrated, low-basis equity positions. For years, she reported their gains after the fact.

She decided to change the sequence. In March, she built income projections for her top 15 investment clients. Then she mapped each household against the 2026 thresholds: the 0% ceiling, the $250,000 NIIT line, and the nearest Medicare surcharge band.

Nine of the fifteen were sitting within $35,000 of a surcharge cliff. Three had unused loss carryforwards nobody had tracked. Two were charitably inclined and over 70 and a half, which made QCDs an obvious lever.

She packaged a single deliverable: a six-page realization plan with a threshold map, a recommended sale amount, a quarterly calendar, and a written risk section. She priced it at $4,500 for the first year and $7,500 annually for ongoing coordination.

Eleven of fifteen said yes. That is roughly $82,500 of new recurring revenue from existing clients. Moreover, the work happened between April and November. Her busy season did not get worse. Her margin did get better.

The lesson is not complexity. It is sequence. She already knew the rules. She simply moved the conversation from February to April. You can study more outcomes on our documented client results page.

Uncle Kam in Action: The Gap-Year Harvest

Here is a hypothetical example of how this works in practice.

The scenario: A married couple, both 63, sold their manufacturing company in 2024. Neither has started Social Security. Required minimum distributions are still years away. Their 2026 projected taxable income, after the standard deduction, is about $62,000.

The challenge: They hold $1.9 million in a brokerage account with roughly $1.2 million of unrealized long-term gain. Once RMDs begin and Social Security starts, their income will jump sharply. At that point, every realized gain faces 15% or 20% plus the 3.8% NIIT, plus Medicare surcharges.

How Uncle Kam would approach it: The 0% long-term rate ceiling for joint filers in 2026 sits near $98,900 of taxable income. Their projection shows $62,000. Therefore, roughly $36,900 of room exists this year at a 0% federal rate.

Illustrative numbers: The couple sells enough shares to realize about $36,900 of long-term gain. They immediately repurchase similar positions, because the wash sale rule does not apply to gains. Their basis resets upward by $36,900. The federal tax on that gain could be roughly zero.

If that same gain were realized later at 15% plus 3.8%, the cost would run near $8,800. Repeat the harvest across five gap years, and the avoided federal tax could approach $44,000. Actual results depend entirely on the client’s facts.

One caution matters here. Harvesting gains raises MAGI, which can affect marketplace health insurance subsidies before Medicare begins. Therefore, model both effects together, not separately.

Related Resources

• Proactive tax strategy services for firms
• The MERNA method for sequencing strategies
• In-depth tax guides for practitioners
• Annual tax planning calendar and deadlines
• More tax strategy articles for professionals

If you want to deepen the technical foundation first, bookmark this practitioner library on capital gains planning and work through it section by section.

Next Steps

Start small and move fast. You do not need a new tech stack to begin this week.

• Pull your top 15 clients with Schedule D activity above $50,000.
• Build a 2026 projection and map each to the thresholds.
• Flag anyone within $40,000 of a Medicare surcharge cliff.
• Track unused capital loss carryforwards in one shared file.
• Draft a one-page engagement letter for realization planning.

If you want structure instead of starting from a blank page, our tax pro certification and training program walks through pricing, positioning, and the delivery cadence. It is built for solo practitioners who need leverage, not theory.

Ready to move faster? Book a strategy session with our team and we will map your client base against the 2026 thresholds together. You will leave with a priced engagement you can sell next week.

Frequently Asked Questions

Does the wash sale rule apply to harvested gains?

No. The wash sale rule only disallows losses. Your client can sell an appreciated position and repurchase it immediately. The basis resets upward with no waiting period required.

Does a loan against a brokerage account count as income?

No. Loan proceeds are not gross income. Therefore, borrowing does not raise MAGI, trigger NIIT, or affect Medicare surcharge bands. However, the interest cost is real and accrues until repayment.

How much can a client offset against ordinary income?

Net capital losses offset capital gains first without limit. After that, up to $3,000 per year offsets ordinary income. Any unused loss carries forward indefinitely until it is used.

When does a 2026 sale affect Medicare premiums?

In 2028. The surcharge uses a two-year lookback on modified adjusted gross income. Consequently, clients often forget the connection by the time the higher premium notice arrives.

What fee can a solo firm realistically charge for this?

Most practitioners land between $3,500 and $7,500 for an initial plan. Ongoing retainers typically run $5,000 to $15,000 annually. Price against documented savings rather than billable hours.

Do heirs owe tax on an inherited loan balance?

The estate repays the loan from assets. Because Section 1014 resets basis at death, selling those shares generates little or no gain. The estate must still hold enough liquidity to settle the debt.

Is a QCD better than donating appreciated shares?

It depends on the goal. A QCD excludes income, which protects MAGI thresholds directly. Donating shares removes embedded gain instead. For clients near a surcharge cliff, exclusion usually wins.

This information is current as of 10/16/2026. Tax laws change frequently. Verify current limits at IRS.gov if reading this later. This article is educational and is not individualized tax advice.

Last updated: October, 2026