What Liquidity Means When You Want to Sell

Liquidity, for a seller, comes down to three numbers: how long until the cash arrives, how far the price you receive falls below the price you expected, and what the exit costs in fees, penalties or taxes. A holding is liquid when all three are small and predictable, and illiquid when any one is large or uncertain.

Some limits come from the market, such as a thin pool of buyers. Others are written into law or a contract: a redemption deadline, a penalty schedule, a repurchase window. A thin market may or may not improve; a penalty or lockup ends on a known date, so waiting pays only if that date is close.

Key takeaways

Stocks and ETFs sell while the market is open and settle one business day later; the main cost is the spread.
Mutual funds generally must pay within seven days; interval funds buy back only 5% to 25% of shares per offer.
CDs, I bonds and 401(k) plans put a stated price on leaving early, from lost interest to a 10% additional tax before age 59½.
Homes, financed cars and collectibles carry commissions and payoffs on top of the buyer's price.
In the hypothetical $20,000 example below, exit costs range from $5 to $2,000, before any income tax.

Listed securities and funds

Stocks and ETFs

A listed stock or ETF can be sold whenever its market is open. The cost of selling immediately is the spread: the gap between the highest price a buyer will pay (the bid) and the lowest price a seller will accept (the ask), as the SEC's Investor.gov glossary defines it. Since May 28, 2024, trades in stocks, bonds, municipal securities, ETFs and certain mutual funds settle on a T+1 cycle, one business day after the trade, according to the SEC's investor bulletin on the change.

Mutual funds

A mutual fund has no spread to cross, but it has a pricing rule. Under SEC Rule 22c-1, a fund redeems shares at a price based on the net asset value (NAV) next computed after it receives your order, so a morning order gets the next NAV calculation, not the morning's value. Section 22(e) of the Investment Company Act then bars a registered fund from postponing payment for more than seven days after you tender your shares. The exceptions cover unusual New York Stock Exchange closures or trading restrictions, emergencies that make selling holdings or valuing assets impractical, and periods the SEC permits by order.

Behind that promise, SEC Rule 22e-4 requires most open-end funds (not money market funds or in-kind ETFs) to sort holdings into four liquidity buckets, from highly liquid (cash in three business days or less without significantly moving the price) to illiquid (not sellable that way within seven calendar days). Funds and in-kind ETFs may not buy an illiquid investment if more than 15% of net assets would then be illiquid. None of this guarantees a price: a fund can meet the seven-day deadline while the NAV you receive has fallen.

Bonds, CDs and savings bonds

Bonds

Most corporate bonds trade over the counter, usually with a brokerage firm acting as principal, according to FINRA's bond page. FINRA warns that a bond sold before maturity may return less than its full principal, that a frequently traded bond is considerably more liquid than one that trades intermittently, and that a firm buying the bond from you may build a markdown into its price. Trade reports collected by FINRA's TRACE system, and the MSRB's EMMA website for municipal bonds, show what similar bonds traded for.

Bank CDs and brokered CDs

A bank CD is a contract with a term. The CFPB says withdrawing money early means paying a penalty fee to the bank, and suggests comparing penalty amounts when choosing a CD. The agreement sets the penalty. If you close a CD before it has earned as much interest as the penalty, the difference can come out of your deposit.

Brokered CDs work differently. The SEC's brokered CD bulletin says they generally do not carry early withdrawal penalties like bank CDs and can generally be sold at any time on a secondary market, subject to market conditions. But some have no secondary market, a sale can return less than you paid if rates have risen, and the broker may charge a selling fee.

I bonds

Series I savings bonds have two fixed rules, per TreasuryDirect: you can cash one in after 12 months, and if you cash it in before five years, you lose the last three months of interest. Before month 12, the money is not available at all.

Retirement, interval funds, tokens

Retirement accounts

A 401(k) can be harder to reach while you still work for the employer that sponsors it: the IRS notes that plans may, but are not required to, allow hardship distributions, so the plan's terms come first. When money can come out, the cost is tax. The IRS describes a 10% additional tax on early distributions, generally those taken before age 59½ from qualified plans such as 401(k) and 403(b) plans. Exceptions include total and permanent disability, distributions to a beneficiary after death, deductible medical expenses above 7.5% of adjusted gross income, and separation from service in or after the year you reach age 55. For certain public safety employees that age is 50. Withholding may not cover the 10%, and IRAs follow separate rules.

The 10% comes on top of income tax: the IRS's early distribution page says most retirement plan distributions are subject to income tax and may also face the additional 10% tax. Income tax on pre-tax money is generally owed whenever it comes out, though possibly at a different rate later, so the 10% is the clearest price of speed.

Interval funds

The SEC's interval fund bulletin says they generally make repurchase offers every three, six or twelve months, buy back only 5% to 25% of outstanding shares in each offer, and generally fill oversubscribed offers pro rata, so you may sell only part of what you request. The next offer can be up to twelve months away, and repurchase fees are possible.

Tokenized assets

A token does not by itself create a buyer. A January 28, 2026 SEC staff statement says a token issued by a third party may or may not give you a holder's rights in the underlying security, and can expose you to that third party's risks, such as bankruptcy. It reflects staff views, not a rule.

Property, cars and collectibles

Real estate

A house sells on a buyer's schedule. A May 2025 Federal Reserve research note found that the commission offered to buyer's agents in multiple listing service data averaged about 2.7% by 2023, down from about 3% in the late 1990s. The authors lacked data on the seller's own agent fee and assume the total is about twice that rate. The National Association of Realtors states that agent compensation is fully negotiable. On a hypothetical $400,000 sale, an assumed 5.4% total commission is $21,600, before closing costs, the mortgage payoff or repairs.

A car with a loan

The lender has a claim on the car, so it takes part in the sale. The CFPB advises that you will likely need to notify the lienholder before selling and should check your finance contract. It also notes that the payoff amount can differ from your statement balance because of how interest is calculated and any late fees or charges. Title steps vary by state; New York's DMV, for example, says that when a lienholder removes a lien electronically, a new title is not sent automatically. If the sale price is below the payoff, you cover the gap: a $12,000 sale against a $14,000 payoff takes $2,000 of your own money, while a $17,000 sale leaves you $3,000.

Collectibles at auction

An auction adds fees on both sides and a wait. Sotheby's fee guide (undated) says the seller is paid within 45 days of the sale, once the buyer has paid, and receives the hammer price less commission and agreed expenses; it lists a standard seller's commission of 10% of the hammer price. The buyer pays a premium on top, the consignment contract sets the actual terms, and a lot that misses its reserve goes unsold.

A $20,000 sale in a hurry

Illustrative example (all inputs hypothetical): each holding is worth $20,000 on the day you decide to sell. The ETF has a 0.05% spread. The CD is a 12-month CD at 4.00% APY with a penalty of six months of interest. The I bond has been held two years and is assumed to earn 4% a year. The 401(k) assumes the whole $20,000 is pre-tax money taxed at a 22% federal rate, no state tax, age under 59½ and no exception.

ETF cost     = value x spread / 2      (selling at the bid vs the midpoint)
CD cost      = value x APY x 6 / 12    (six months of interest, simple approximation)
I bond cost  = value x rate x 3 / 12   (last three months of interest)
401(k) cost  = value x (22% + 10%)     (income tax + additional tax)

Holding (hypothetical)	Rule applied	Cost of selling now	Cash received
ETF, 0.05% spread	Half the spread given up selling at the bid	$5	$19,995
12-month CD, 4.00% APY	Six months of interest: $20,000 x 4% x 6/12	$400	$19,600
I bond held 2 years, 4% rate	Last three months of interest: $20,000 x 4% x 3/12	$200	$19,800
401(k), 22% rate, under 59½	$4,400 income tax + $2,000 additional tax	$6,400	$13,600

The 401(k) looks worst at $6,400, but $4,400 of that is income tax that would generally be owed whenever the money came out, so the cost tied to speed is the $2,000 additional tax. Roth or after-tax money, or state income tax, would change the figures. The CD and I bond lines are approximations, and the ETF line ignores commissions and price moves.

Timing runs on a separate clock. An interval fund might fill only part of a $20,000 request: if its offer covers half of all requests, a pro rata fill sells about $10,000 now and leaves the rest for the next offer.

Frequently asked questions

Is an asset liquid just because it has a quoted price?

No. Investor.gov defines the bid as the highest price a buyer will pay for a specified number of shares, so a larger order may not trade at that price. For bonds, recent trade reports are a better guide than a single quote.

Does the 15% illiquid limit apply to every fund?

No. Rule 22e-4 excludes money market funds, and it covers open-end funds and in-kind ETFs, not interval funds, which repurchase on their own schedule. If a covered fund's illiquid holdings later exceed 15% of net assets, the person running its program must report to the board within one business day.

Why can a brokered CD lose money without a penalty?

Because the exit is a sale at the market price. The SEC says a lower-yielding CD draws less demand after rates rise and may sell at a discount; if rates have fallen, it may sell at a gain.

Can I avoid the 10% additional tax on a 401(k) withdrawal?

Only if an exception applies, such as separation from service in or after the year you turn 55, disability, or deductible medical expenses above 7.5% of adjusted gross income. Each exception has its own conditions. If your Form 1099-R does not show the right distribution code, the IRS says you may need Form 5329 to claim it.

Who gets paid first when I sell a financed car?

The lender's payoff comes out of the proceeds, and you keep anything above it. Because the CFPB notes that the payoff can differ from the statement balance, ask the lender for a current payoff figure before agreeing a price, and check your state's title-transfer steps.

A checklist before you sell

Write down the date you need the cash and the minimum net amount, then work backward from the slowest step.
Find the governing rule for the holding: the prospectus redemption section, the CD agreement, TreasuryDirect rules, the plan's distribution terms, the lender's payoff letter or the auction consignment terms.
List every deduction in dollars: spread or markdown, penalty, tax, commission, fees, lien payoff.
Compare the net cash with the cost of waiting. If you need only part of the amount, sell the pieces with the smallest exit cost first.