Selling Your SaaS Company: QSBS First, Then Spread the Rest
For a software company sale, QSBS can exclude a large part of the gain. Whatever is left can be paid out over years you choose so it is taxed in lower brackets. Here is the math on $4M of proceeds, by state.
On a $4,000,000 cash payment for zero-basis C corporation stock that does not qualify for QSBS, spreading it over 10 years cuts the total tax from $1,442,169 to $1,084,415 in California and from $947,065 to $714,000 in a state with no income tax. Washington shows the largest gap ($1,286,543 vs $799,400) because its capital gains excise has an annual deduction that a spread sale uses every year.
Go deeper: how stock deals, QSBS and deferred revenue shape a SaaS sale on Big Sale Tax.
$4M of SaaS sale proceeds: all at once vs. spread over 10 years
How these were run: married filing jointly, $150,000 of other taxable income every year, C corporation stock with zero basis, the 3.8% net investment income tax included (it applies to C corporation stock), 2026 federal and state tables every year, federal alternative minimum tax included. The deferred balance stays under the $5,000,000 §453A line. Interest on the unpaid balance is extra ordinary income and is not in these figures. Same engine as our calculator.
What is the tax bill on your software company sale going to be?
Send me the sale price and rough basis. Within one business day I'll email you the actual number and the Seller's Guide to §453. If it doesn't fit your deal, I'll tell you that plainly.
No retainer · no obligation. Hans Goldstein, a licensed insurance agent (CA Insurance License #4273294), will contact you and may discuss insurance products, including annuities.
QSBS first, then spread what is left
Section 1202 can exclude gain on qualified small business stock entirely, and software companies are generally eligible. For stock issued after July 4, 2025 the cap is $15,000,000 per company (or 10 times basis, if larger), the company's gross assets must have been $75,000,000 or less when the stock was issued, and the exclusion is 50% after 3 years, 75% after 4 and 100% after 5. Stock issued earlier keeps the old rules: $10,000,000 cap (or 10 times basis), $50,000,000 gross assets, more than 5 years. Where QSBS applies it goes first; the installment structure handles the gain above the cap.
What is specific to a software company sale
- Stock sale or asset sale. In an asset sale of a C corporation, the company pays 21% on the gain and you are taxed again on the distribution. Buyers often prefer assets; know the after-tax difference before agreeing.
- Rollover equity. Part of the price paid in buyer equity can be deferred under §351 or §721 when the deal is structured for it. Only the cash portion is structured here.
- Earn-outs. A price tied to future revenue is a contingent payment sale and can still use the installment method. Payments that depend on you staying employed are compensation, taxed as ordinary income.
- Public buyer stock. The installment method does not apply to stock or securities traded on an established market (§453(k)(2)), so consideration paid in public shares is not part of this.
- Deferred revenue and working capital adjustments change the price, not the character of the gain.
The rules that keep the deferral intact
- The $5 million line (§453A). If more than $5,000,000 of installment notes from sales over $150,000 are outstanding at year end, an annual interest charge applies to the deferred tax on the excess. Many structures are sized to stay under it.
- No borrowing against the note (§453A(d)). Pledging the installment obligation as collateral is treated as receiving payment.
- Related buyers (§453(e)). If you sell to a related person and they resell within two years, the deferral can accelerate.
- Electing out is a one-way door (§453(d)). The election is due with the return and can be revoked only with IRS consent.
- Earn-outs. A price that depends on future results is a contingent payment sale: with a stated maximum price, basis is recovered as if the maximum is paid; with only a fixed period, evenly over that period; with neither, over 15 years (Treas. Reg. §15a.453-1(c)).
How the structured version works
The buyer pays the full price at closing. The part you choose to defer goes to an assignment company, which funds your payment schedule with a fixed annuity from a highly rated life insurer. You pick the schedule: level payments, a delayed start, a lump in a later year, or a mix. The buyer gets clean title on day one; you get a contract for future payments instead of one large taxable check. Your CPA reports each year's gain on Form 6252.
The trade-off, stated once: money you defer is not available to spend or invest elsewhere until each payment arrives, and the schedule is fixed once it is funded. Most sellers defer part of the price and keep the rest as cash at closing.
When it fits
- A cash payment at closing on stock or assets with a large gain above any QSBS exclusion.
- A buyer paying cash: private equity, a strategic acquirer, or a search fund with bank financing.
- You do not need all of the after-tax proceeds in year one.
When it does not
- The whole gain is covered by QSBS.
- The deal is all rollover equity or public stock.
- You need every dollar in year one.
Find out what your software company sale tax bill actually is, and what you can do about it
No retainer. On a funded structure, the insurer pays a one-time commission of about 4% of the amount structured to the brokerage firm that places it (Hans’s share is about 2.4%; no trail). It is built into the annuity pricing, not a separate fee.
Find out what your tax bill actually looks like before you sell, including the parts your CPA may not raise until the return is already being prepared.
Most people find out what they owe after the sale closes, when nothing can be changed. A short conversation now tells you the number, which layers apply to your situation, and which options are still open while the sale is still in front of you.
- What you will actually owe: federal, the 3.8% surtax, recapture and your state
- Which of those layers you can still do something about
- Whether spreading the sale changes the number in your case
Hans Goldstein · 213-414-2808 · Hans Goldstein: Tax & Exit Planning · This is an educational conversation, not tax advice. Bring your CPA in before you file.
Hans Goldstein, a licensed insurance agent (CA Insurance License #4273294), will contact you and may discuss insurance products, including annuities.
Frequently asked
Q: My stock qualifies for QSBS. Do I still need this?
A: QSBS goes first. Gain above the §1202 cap (for stock issued after July 4, 2025, $15,000,000 per company, or 10 times your basis if more) is taxable, and that remainder can be spread with the installment method.
Q: Does the 3.8% net investment income tax apply if I run the company?
A: For C corporation stock, generally yes: gain on C corporation stock is investment income even for a founder who works in the business. The working-owner exception covers interests in partnerships and S corporations.
Q: Can I spread the cash part of a private equity deal with rollover equity?
A: Yes. Rollover equity can be tax-deferred on its own if the deal is structured for it. The cash portion is taxable, and that is the part a structured installment sale spreads.
Q: I am moving to a no-tax state before the sale. Does that work?
A: Possibly, but states look hard at moves close to a sale, and where you live on the closing date matters. Get state-tax advice before relying on it.
Related
No retainer and no fee to you. On a funded structure, the insurer pays a one-time commission of about 4% of the amount structured to the brokerage firm that places it (Hans's share is about 2.4%; no trail). It is built into the annuity pricing.
Educational, not tax or legal advice. 2026 figures. Your CPA or attorney should confirm the allocation, character and reporting for your sale.