Section 1045 QSBS Rollover: 2026 Advisory Playbook

Section 1045 QSBS Rollover: 2026 Advisory Playbook

A section 1045 QSBS rollover defer capital gains startup stock engagement is one of the highest-value services an EA can sell in 2026. Your founder client sells early. She has a 14-month hold. The five-year clock never finished. Most preparers report the gain and move on. However, a 60-day reinvestment window can defer every dollar. Furthermore, that analysis is worth far more than a 1040 fee.

Table of Contents

• Key Takeaways
• What Is a Section 1045 QSBS Rollover?
• What Changed for 2026 Under OBBBA?
• How Do You Execute the Rollover Step by Step?
• What Does the Math Look Like With Real Numbers?
• How Much Should You Charge for This Work?
• Who Are Your Best Prospects in 2026?
• What Mistakes Blow Up These Engagements?
• Uncle Kam in Action: The Partner Spotlight
• Related Resources
• Next Steps
• Frequently Asked Questions

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Key Takeaways

• Section 1045 defers gain on QSBS held more than six months.
• Clients must buy replacement QSBS within 60 days of the sale.
• The old holding period tacks onto the replacement stock.
• OBBBA raised the exclusion cap to $15 million for post-July 4, 2025 shares.
• This analysis prices as advisory work, not as prep work.

What Is a Section 1045 QSBS Rollover?

Most of your peers know Section 1202. Far fewer know its companion provision. Under Internal Revenue Code Section 1045, a holder who sells QSBS can roll the proceeds into new QSBS. As a result, the gain is deferred rather than recognized. Moreover, the original holding period tacks onto the replacement shares. That tacking is the real prize. It keeps the Section 1202 clock running instead of restarting it.

For a client who sold at month 14, this changes everything. Without the rollover, the gain hits at 2026 federal capital gains rates. With it, the clock continues toward the exclusion. Therefore, the planning value is enormous. Yet most firms never raise it, because they see the sale after year-end. By then the 60-day window is long gone.

The Four Definitions You Must Master

• QSBS: stock in a domestic C corporation, acquired at original issuance, meeting the gross-asset and active-business tests.
• Replacement QSBS: new stock that independently satisfies every QSBS test on its own.
• Tacking: adding the old holding period to the new stock for the Section 1202 test.
• Deferred gain: the untaxed gain that reduces basis in the replacement shares.

Why This Is Advisory, Not Compliance

Compliance work reports what already happened. Advisory work changes what happens next. A rollover analysis must occur before or during the 60-day window. Consequently, it cannot be prep work. It is a time-sensitive, high-stakes decision engagement. Price it that way. Our full QSBS Section 1045 rollover strategy brief walks through the deliverable structure in detail.

What Changed for 2026 Under OBBBA?

The One Big Beautiful Bill Act created a hard dividing line. Shares issued on or before July 4, 2025 follow the legacy rules. Shares issued after that date follow a tiered schedule. Therefore, your first diagnostic question is always the issuance date. Get that wrong and the entire plan collapses.

Why the Tiers Do Not Kill Section 1045

Some advisors assume the new tiers make rollovers obsolete. That reading is wrong. First, the tiers only help post-cutoff shares. Nearly every startup with a 2026 exit holds pre-cutoff stock. Second, a two-year hold still earns nothing. Third, even at the three-year tier, half the gain stays taxable. Consequently, a rollover can still beat a partial exclusion. The comparison is a real modeling exercise, and that is billable.

The 2026 Rate Environment

Federal long-term capital gains rates for 2026 remain 0%, 15%, and 20%. Add the 3.8% net investment income tax for high earners. As a result, your top-bracket founder faces a 23.8% federal cost on a non-excluded gain. On a $5 million gain, that is $1.19 million. Verify current thresholds through the IRS guidance on capital gains and losses before you model.

How Do You Execute the Rollover Step by Step?

This is the section your competitors never publish. Nobody explains the sequence. Therefore, owning it positions you as the practitioner who actually does the work. Here is the eight-step process your engagement letter should mirror.

The Eight-Step Execution Sequence

1. Confirm the original stock met every QSBS test at issuance. Pull the cap table and the gross-asset schedule.
2. Verify the holding period exceeded six months. Document the exact acquisition date.
3. Start the 60-day clock on the sale closing date. Calendar it immediately with two reminders.
4. Identify replacement QSBS. The new issuer must independently satisfy all tests.
5. Close the purchase inside the window. Wire confirmation and stock certificate both matter.
6. Compute the deferred gain and reduce the replacement basis by that amount.
7. Attach the election statement to a timely filed return, including extensions.
8. Report on Form 8949 and Schedule D with the proper adjustment.

The Election Statement Itself

The election is made on the return, not on a separate form. Revenue Procedure 98-48 governs the mechanics. Your statement should identify the stock sold, the sale date, the gain realized, the replacement stock purchased, and the purchase date. In addition, state the amount of gain deferred. Keep a signed copy in the permanent file. Review current filing instructions through IRS Publication 550 on investment income.

Building the Deliverable

Clients pay for clarity, not spreadsheets. Your deliverable should include a qualification memo, a side-by-side scenario model, a 60-day calendar, and an implementation checklist. Firms that scale this work use entity-aware tax planning software to model the 1040, the K-1, and the holding company together. Manual spreadsheets simply do not survive a multi-entity founder.

What Does the Math Look Like With Real Numbers?

Here is the scenario that sells the engagement. Your client bought founder stock for $200,000. She sells in 2026 for $2,000,000 after a 14-month hold. Her realized gain is $1,800,000. She is in the top bracket, so her blended federal rate is 23.8%.

The Partial Rollover Calculation

Most founders will not reinvest every dollar. They need living expenses. Suppose she reinvests $1,400,000 of the $2,000,000. The shortfall is $600,000. That amount is recognized immediately, capped at the realized gain. Therefore, she recognizes $600,000 now and defers $1,200,000.

Compare the two outcomes. The full rollover saves $428,400 of current federal tax. The partial rollover still saves $285,600. Either way, your fee is a rounding error against the benefit. That is the argument that closes the engagement.

How Much Should You Charge for This Work?

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Here is where most EAs leave money on the table. They perform rollover analysis inside a $900 return. Meanwhile, the client captured a six-figure deferral. That mismatch is not humility. It is a pricing failure. Value pricing solves it.

Structuring the Engagement

Split the work into two phases. Phase one is a qualification and feasibility review, billed as a fixed fee. Phase two is implementation and election filing. This structure protects you when the stock fails a QSBS test. Furthermore, it lets the client say yes to a smaller first step. Many of our partners pair this with ongoing year-round tax advisory support for the same founder.

Handling the Fee Conversation

Lead with the number, not the hours. Say this: the analysis may defer roughly $428,000 of federal tax. The fee is $22,000. Then stop talking. Silence closes deals. In addition, document the risk that the rollover may not qualify. Honest framing builds the trust that creates referrals.

Who Are Your Best Prospects in 2026?

Carta reported 232 U.S. startups acquired in the fourth quarter of 2025. Nearly half were at pre-seed or seed stage. That single statistic defines your market. Early-stage companies rarely reach five years before an exit. Consequently, hundreds of founders now hold sub-five-year QSBS gains with no exclusion available.

Four Client Segments Worth Targeting

• Founders of acquired startups. Largest gains, highest urgency, best fees.
• Early employees who exercised options. Smaller gains but high referral value.
• Angel investors. Recurring work as each portfolio company exits.
• Serial founders. They reinvest naturally, which makes the rollover easy.

Where to Find Them

Startup attorneys and fractional CFOs control this referral flow. Build two relationships this quarter. Offer a free qualification screen for their clients. That screen costs you an hour and opens five-figure engagements. Similarly, position yourself clearly for high-net-worth individuals with equity holdings on your website and your profile.

You can also skip the cold outreach entirely. Uncle Kam routes pre-qualified advisory opportunities to certified partners through a built-in marketplace. Apply to become a certified Uncle Kam tax pro and start receiving inbound founder work.

What Mistakes Blow Up These Engagements?

Every one of these mistakes is preventable. However, each one is also a malpractice exposure. Review this list before you sign the engagement letter.

The 60-Day Trap

The clock starts on the sale date. It does not pause for holidays or weekends. Moreover, a December closing can push the deadline into the next tax year. Calendar the deadline the day you are engaged. Then set reminders at day 20 and day 45. Finding qualifying replacement stock takes longer than clients expect.

Replacement Stock That Fails

The new issuer must be a domestic C corporation. It must pass the gross-asset test at issuance. It must run a qualified active business. Service firms, finance, hospitality, farming, and mining are excluded. Therefore, verify qualification in writing before the wire goes out. Check the statutory tests in IRC Section 1202.

State Conformity Gaps

California, Pennsylvania, New Jersey, Alabama, and Mississippi present conformity issues. California does not conform to Sections 1045 or 1202 at all. As a result, a California founder may defer federal tax while owing full state tax. Model both layers. Clients who discover this later will not stay clients. A solid grasp of multi-state entity structuring considerations helps here.

Partnership and Fund Complications

QSBS held inside a partnership or fund adds a layer. The election may occur at the entity level or the partner level. Rules differ based on ownership continuity. Consequently, flag these as higher-complexity engagements and price accordingly. Our Section 1045 rollover implementation guide for advisors breaks down the pass-through scenarios.

Uncle Kam in Action: The Partner Spotlight

Here is a hypothetical example of how this works in practice. Picture an enrolled agent with eight years of experience and a book of roughly 300 individual returns. Her average fee is $850. She has hit a ceiling. She wants founder clients but has never priced an advisory engagement.

The Challenge. A startup attorney refers a founder in October 2026. The founder sold her seed-stage company for $3,400,000. Her basis was $340,000. She held the stock for 26 months. No Section 1202 exclusion applies, because the shares were issued before July 4, 2025. Her realized gain is $3,060,000.

How Uncle Kam Would Approach It. The EA runs a qualification screen first. She confirms the original issuance, the C corporation status, and the gross-asset history. Next, she calendars the 60-day deadline. Then she models three paths: pay the tax now, roll fully, or roll partially. The founder plans to start a second company, so replacement QSBS is already in view.

Illustrative Numbers. At the 23.8% federal rate, the full gain would cost roughly $728,000. A full rollover could defer all of it. The founder instead reinvests $2,800,000 and keeps $600,000. Therefore, she recognizes about $600,000 of gain, costing roughly $142,800 federally. The deferral could save her around $585,000 in current-year federal tax. The holding period also tacks forward toward the five-year mark.

The Practice Impact. She bills $28,000 for the engagement. That single project equals 33 individual returns. More importantly, the attorney sends two more founders that quarter. Review real outcomes on our documented client results page. This example is illustrative only and assumes every QSBS test is satisfied.

Related Resources

• Proactive tax strategy frameworks for advisors
• The MERNA method for sequencing strategies
• In-depth tax planning guides library
• Latest tax strategy blog articles
• Key filing and election deadline calendar

Before you take on your first founder engagement, build the system. Start with the QSBS 1045 rollover advisory toolkit, then layer in pricing templates and a repeatable deliverable. Systems turn one good engagement into a service line.

Next Steps

• Screen your client list for anyone holding startup C corporation stock.
• Build a one-page qualification checklist covering issuance date and asset tests.
• Draft a two-phase engagement letter with fixed fees for each phase.
• Introduce yourself to two startup attorneys in your market this month.
• Apply to join the Uncle Kam tax pro network for inbound opportunities.
• Then book a strategy session to map your advisory offer.

Frequently Asked Questions

Can a client do a partial Section 1045 rollover?

Yes. The client recognizes gain equal to the proceeds not reinvested, capped at the realized gain. The remainder is deferred. Therefore, partial rollovers are common when founders need liquidity. Model both versions so the client sees the trade-off clearly.

Does the rollover restart the five-year clock?

No. The original holding period tacks onto the replacement stock for the Section 1202 test. However, the replacement stock must independently qualify as QSBS. As a result, tacking is the main reason to roll rather than pay.

When exactly does the 60-day window start?

The window starts on the date of sale. Calendar days count, not business days. Holidays do not extend it. Consequently, a late-December closing creates a cross-year deadline. Flag those immediately and work backward from the date.

How is the election actually filed?

Attach a statement to a timely filed return, including extensions. Revenue Procedure 98-48 sets the content requirements. Report the transaction on Form 8949 and Schedule D with the proper adjustment. Keep the supporting documents permanently.

Do state rules follow the federal treatment?

Not always. California does not conform to Section 1045 or Section 1202. Pennsylvania, New Jersey, Alabama, and Mississippi also present issues. Therefore, always model the state layer separately. Confirm positions with the relevant state revenue agency.

What if the client cannot find replacement QSBS in time?

The gain becomes fully taxable in the year of sale. No extension exists for the 60-day rule. For this reason, phase one of your engagement should test replacement availability before anyone commits. Protect the client and your own exposure.

Is this work realistic for a solo EA practice?

Absolutely. Enrolled agents have unlimited representation rights and full authority here. The barrier is process, not credential. Build a checklist, a model, and a deliverable template. After that, each engagement takes far less time than the first.

This information is current as of 10/19/2026. Tax laws change frequently. Verify updates with the IRS or FTB if reading this later. This article is educational and is not tax advice.

Last updated: October, 2026