Restricted Stock Holding Period: Rule 144, Taxes, and QSBS

The restricted stock holding period runs on two separate clocks. Under SEC Rule 144, you must hold the shares at least six months before selling if the issuer files reports with the SEC, or at least one year if it does not. A second clock, the tax holding period, decides whether your gain is taxed at short-term or long-term capital gains rates, and it does not always start on the same day as the SEC clock.

Getting both right matters. Selling too early under Rule 144 is an illegal unregistered distribution. Selling too early for tax purposes is legal, but it can roughly double your federal tax bill on the gain.

The Rule 144 Clock

Rule 144 is the SEC safe harbor that lets holders of restricted securities sell into the public market without registering the shares. Miss its conditions and you may be treated as an underwriter conducting an unregistered distribution, with consequences that can include forced rescission of the sale.¹

The minimum holding period turns on whether the issuer files with the SEC:

Reporting companies: at least six months. The company must be current on its SEC filings and must have been a reporting company for at least 90 days before your sale.¹
Non-reporting companies: at least one year.¹

One boundary worth naming up front: Rule 144 is not available at all for resale of securities originally issued by a shell company. If that company later becomes an operating business and files “Form 10 information” reflecting the change, holders can sell under Rule 144 after one year has passed from that filing date, provided the company stays current on its SEC reports during that year.²

When the Clock Actually Starts

The holding period begins on the date the shares are “acquired and fully paid for.” For most employees, the services you perform count as the payment. The specific start date depends on which type of award you hold, and the difference is not cosmetic.

A Restricted Stock Award (RSA) gives you actual shares at grant. You own them immediately, even though the company can take them back if you leave before vesting. The Rule 144 clock starts on the grant date.

A Restricted Stock Unit (RSU) is only a promise to deliver shares once you vest. You do not own any securities until the RSU settles and shares land in your account. The clock starts on that delivery date. An RSU holder at a reporting company must wait through the full vesting schedule and then six more months before selling under Rule 144.

Correctly identifying the start date is not optional. Selling before the holding period ends is an illegal unregistered distribution regardless of intent.

Tacking for Converted Securities

If you receive shares by converting one security into another from the same company, such as exercising a convertible note or exchanging preferred shares for common stock, Rule 144 lets you “tack” the holding period. The clock is treated as having started when you originally acquired the converted security, not when the new shares were issued.²

What Happens After the Holding Period Ends

Waiting out the clock is necessary but not always sufficient. The remaining Rule 144 conditions depend on whether you are an affiliate of the company. An affiliate is someone who controls, is controlled by, or shares common control with the issuer, which in practice means directors, executive officers, and large shareholders.

Non-Affiliates

If you are not an affiliate and have not been one for at least three months, and you have held the restricted shares for at least one year, you can sell freely. No volume limits, no manner-of-sale rules, no Form 144, no public information requirement.¹

Between six months and one year at a reporting company, non-affiliates can sell, but must confirm the company is current on its SEC filings.

Affiliates

Affiliates face ongoing restrictions every time they sell, even after the holding period ends. In any rolling three-month period, an affiliate cannot sell more than the greater of 1% of the outstanding shares of that class, or the average weekly trading volume for the four calendar weeks before filing Form 144 (the trading-volume alternative applies only to exchange-listed stock).¹ For a thinly traded company with 10 million shares outstanding, the 1% ceiling is only 100,000 shares per quarter.

Affiliates must also sell through routine brokerage transactions, at standard commissions, without solicitation. And they must file Form 144 electronically through EDGAR at the time of the sell order if the sales during any three-month period exceed 5,000 shares or $50,000 in total price.³

Getting the Restrictive Legend Removed

Restricted shares carry a legend that prevents your broker from selling them on the open market. Even after the Rule 144 clock runs out, you cannot sell until that legend comes off. The process typically involves an opinion letter from the company’s legal counsel confirming eligibility for public sale under Rule 144, sent to the transfer agent, which then releases the shares for trading. The opinion letter is the bottleneck. If you have a target sale date, start early.

The Tax Holding Period Runs on Its Own Clock

Rule 144 tells you when you can legally sell. The tax holding period decides how much of the proceeds you keep. Confusing the two is one of the most expensive mistakes employees make with restricted stock.

Gains on shares held for one year or less from the acquisition date are taxed as short-term capital gains at your ordinary income rate, which for 2026 can reach 37% federally. Gains on shares held for more than one year qualify for long-term rates. In 2026 those brackets are:

0% on taxable income up to $49,450 for single filers ($98,900 married filing jointly)
15% from $49,450 to $545,500 for single filers ($98,900 to $613,700 married filing jointly)
20% above $545,500 for single filers ($613,700 married filing jointly)

The practical consequence: an employee at a reporting company can legally sell six months after acquisition under Rule 144, but any appreciation is taxed at the higher short-term rate. Holding for more than one year from acquisition can cut the federal tax rate on the gain roughly in half.

The 3.8% Net Investment Income Tax

High earners pay an additional 3.8% net investment income tax on capital gains. The NIIT applies to the lesser of your net investment income or the amount by which your modified adjusted gross income exceeds $200,000 for single filers or $250,000 for married couples filing jointly. Those thresholds are not indexed for inflation and have not changed since the tax took effect in 2013.⁴

For anyone selling a meaningful block of restricted stock, the NIIT is nearly unavoidable. A single sale of appreciated shares at a public company can easily push income past the threshold in the year of the sale. That brings the effective maximum federal rate on long-term gains to 23.8%, and on short-term gains to 40.8%.

How an 83(b) Election Changes the Tax Clock

If you receive an RSA, you can file an election under IRC Section 83(b) to pay ordinary income tax on the shares’ fair market value at the grant date rather than at each vesting date. The election is purely a tax move, but its effect on your holding period is substantial.⁵

Without the election, the IRS treats you as receiving compensation on each vesting date, taxed at the shares’ value on that date. Your capital gains holding period does not begin until each tranche vests. With the election, you pay income tax upfront on the lower grant-date value, and your capital gains clock starts the day after grant. If the shares appreciate significantly between grant and vesting, the savings can be large.

The deadline is 30 days from the grant date. Miss it and you cannot file late. There is no extension, no appeal, no workaround. The election must reach the IRS within that window.

Two clarifications matter here. First, the 83(b) election does not change the Rule 144 holding period for RSAs; that clock already starts at grant. The election only accelerates the tax clock. Second, RSUs are not eligible for an 83(b) election, because you have no property to elect on until shares are delivered. For RSU holders, the tax holding period always begins at vesting and delivery.

Qualified Small Business Stock: A Longer Clock That Can Beat Everything

If your restricted stock was issued by a small C corporation, it may qualify for a separate holding period benefit under Section 1202 that can be worth far more than the ordinary long-term rate.⁶

For stock issued on or after July 5, 2025, following changes enacted in the One, Big, Beautiful Bill Act, the exclusion phases in with the holding period:

Three to four years: 50% of the gain excluded
Four to five years: 75% excluded
Five years or more: 100% excluded

The excluded gain is also exempt from the 3.8% NIIT. The portion that is not excluded is taxed at 28% rather than the standard long-term capital gains rate.

To qualify, the issuer must be a domestic C corporation with aggregate gross assets of no more than $75 million at the time the stock is issued (up from $50 million for stock issued on or after July 5, 2025). At least 80% of the corporation’s assets must be used in an active qualified trade or business, which excludes industries such as professional services, banking, and real estate. The per-taxpayer, per-issuer gain exclusion cap is the greater of $15 million or 10 times your adjusted basis.⁶

Most employees at large public companies will never encounter Section 1202. For startup employees holding stock in a small C corporation, the five-year mark for full exclusion can overshadow every other holding-period consideration on this page.

1
U.S. Securities and Exchange Commission. Rule 144 – Selling Restricted and Control Securities
2
eCFR. 17 CFR 230.144 – Persons Deemed Not to Be Engaged in a Distribution and Therefore Not Underwriters
3
eCFR. 17 CFR 239.144 – Form 144, for Notice of Proposed Sale of Securities
4
Internal Revenue Service. Topic No. 559, Net Investment Income Tax
5
Internal Revenue Service. Instructions for Form 15620, Section 83(b) Election
6
Office of the Law Revision Counsel. 26 USC 1202 – Partial Exclusion for Gain From Certain Small Business Stock