What happens if the market crashes?
Last updated August 2026
Short answer
A fall on a statement is a change in what somebody would pay you today. It becomes a loss when you accept that price.
What changes and what does not
The market value of the portfolio falls, sometimes sharply and usually across nearly everything at once as correlations rise.
Your share count does not change, dividends frequently continue, and the businesses go on operating.
In a taxable account nothing is realised for tax purposes until a sale, so the paper decline has no tax consequence at all.
Why selling is the expensive move
Exiting requires a second decision that is harder than the first, because re-entry never feels safe until prices have already recovered.
The strongest single days tend to arrive within days or weeks of the worst ones, so being out for the bad days usually means missing the good ones.
In a taxable account, selling appreciated positions also realises gains and creates a tax bill that no recovery refunds.
What is worth doing
Keep scheduled contributions running, since they buy more shares per dollar at lower prices.
Rebalance to target, which after a fall means buying equities. That is the correct action and the hardest one, which is why the rule is set in advance.
Harvest losses in a taxable account where they exist, minding the 30-day window on anything substantially identical.
Try it in Walnut
Walnut connects to your brokerage and can show what a fall of a given size would do to your actual positions, before one arrives.
If you are retired or close to it
Withdrawing from a falling portfolio depletes it faster, which is the sequence-of-returns problem in its most concrete form.
Holding several years of spending in cash or short bonds means the equity portion can be left alone to recover.
Reducing discretionary spending temporarily does more for a portfolio's survival than any reallocation made during the decline.
The custody question is separate
A market fall is not a threat to whether your assets exist, only to what they are worth.
Customer securities are segregated from a broker's own assets, and SIPC covers up to $500,000 including $250,000 of cash if a firm fails and assets are missing.
Neither protection has anything to do with prices, which is worth remembering when the two fears arrive together.
Preparing while it is calm
Choose an allocation you could hold through a 40% decline, which usually means less equity than a good year makes attractive.
Keep money needed within a few years entirely out of the market.
Write the plan down, including the rebalancing trigger, because a written rule is the only part of this that survives the event.
Sources
General guidance on market risk is published by the SEC at investor.gov. The wash sale rule is in IRS Publication 550, and coverage limits are published by SIPC. Walnut is informational and is not an investment adviser. This guide is educational and not personalized investment advice.
FAQ
What actually happens to my money in a crash?
+
The market value of your holdings falls. You still own the same number of shares of the same companies, and nothing is realised until you sell. A fall on a statement is not a loss in the tax sense or in any other sense until you act on it.
Should I sell?
+
Selling requires being right twice, on the exit and the re-entry, and the strongest days cluster near the worst ones. Missing a handful of them does lasting damage. The better question is whether the allocation was right before the fall.
How long do recoveries take?
+
It varies enormously, from months to years. The average conceals both extremes, and somebody who needed the money during a slow recovery did not get to wait for the average.
What should I actually do?
+
Keep contributing on schedule, rebalance back to target which after a fall means buying equities, and consider harvesting losses in a taxable account while respecting the 30-day wash sale window.
Are bonds a reliable cushion?
+
Usually, and not always. High-quality bonds have generally fallen less than equities in an equity downturn, though 2022 showed that rising rates can hurt both at once. They remain the most common ballast rather than a guarantee.
What if I am retired?
+
Sequence of returns is the specific risk: withdrawing from a falling portfolio depletes it faster. Holding several years of spending outside equities is what lets you leave the equity portion alone until it recovers.
Is my money safe at the broker?
+
The custody question is separate from the market question. Customer assets are segregated, and SIPC covers up to $500,000 including $250,000 of cash if a member firm fails and assets are missing. Neither protects value.
How do I prepare before the next one?
+
Hold an allocation you could sit through at a 40% decline, keep near-term money out of the market, and write the rebalancing rule down while things are calm. That last one is what survives contact with the event.
Does a crash affect my dividends?
+
Some companies cut dividends in a severe downturn and many do not, so income generally falls far less than prices do. For an investor drawing on dividends rather than selling shares, that gap is the reason a decline in the index is not the same as a decline in their income.
Should I stop contributing until it settles?
+
Pausing contributions during a decline means buying only at higher prices, which is the reverse of what a schedule is for. Unless the money is genuinely needed for expenses, continuing is what turns a fall into an advantage rather than only a loss.