What happens if you can't (or don't) pay your cryptocurrency taxes

Start by separating the two situations, because they lead to very different outcomes. Owing money you can't pay right now is common and fixable. Deciding not to report crypto income is a gamble that has gotten worse as the reporting rules tightened.

If you filed but can't pay

File on time even if you can't send the money. The penalty for not filing is ten times larger than the penalty for not paying, so filing is the cheapest thing you can do. The failure-to-file penalty runs 5% of the unpaid tax for each month the return is late, up to 25%. The failure-to-pay penalty is 0.5% per month, also capped at 25%. Interest runs on top of both and compounds daily.

Pay whatever you can with the return. Every dollar you send now is a dollar that stops accruing penalties and interest. Then set up a plan for the rest.

• A short-term payment plan gives you up to 180 days to pay in full, with no setup fee.
• A long-term installment agreement spreads the balance over monthly payments, usually up to 72 months.
• An offer in compromise settles the debt for less than the full amount when you genuinely can't pay it, though approval is not routine.
• Currently-not-collectible status pauses collection when paying would leave you unable to cover basic living costs.

You can request most of these through your online IRS account. Interest keeps running while you are on a plan, so a plan is a way to stop the aggressive collection steps, not a way to stop the meter.

If you don't report it at all

This is where people get into real trouble, and the odds have shifted. For years the IRS leaned on taxpayers to self-report. It no longer has to.

Digital-asset brokers now file Form 1099-DA. Starting with the 2025 tax year, exchanges report your gross proceeds directly to the IRS, and the return you file in 2026 is matched against those forms. When the number on your return doesn't line up with the number the exchange reported, the system flags it automatically. Cost-basis reporting phases in after gross proceeds, which is why early notices often overstate the gain: they show what you sold for without what you paid.

Two more facts matter. Form 1040 asks a direct question about digital assets near the top of the return, and you sign that return under penalty of perjury, so a false answer is a separate problem from the unpaid tax. The IRS has also used John Doe summonses to pull user records straight from major exchanges, so "they will never know" is not the position it used to be.

What the penalties actually are

An honest mistake and a deliberate one are treated very differently. If you underreport by accident or through carelessness, expect the tax you owe plus interest, plus a possible accuracy-related penalty of 20% of the underpayment. If the IRS concludes you acted with intent to evade, the civil fraud penalty is 75% of the underpayment. Willful evasion can also be charged as a felony, with prison time and fines on the table.

The line between a costly mistake and a crime is intent, and a pattern of ignoring notices is exactly what can push a case toward the deliberate side. Most cases never reach the criminal side, but the way you respond is part of what decides that.

Time limits work in your favor only if you file. The IRS generally has three years to assess more tax, six years if you leave off more than 25% of your income, and no limit at all if you filed nothing or filed a fraudulent return. Once tax is assessed, the agency generally has ten years to collect it.

How the IRS collects

Unpaid tax that you ignore does not sit still. The IRS can file a lien against your property, levy your bank accounts, garnish wages, and take future refunds. A balance the IRS classifies as seriously delinquent can also lead the State Department to deny or revoke your passport. Each of these steps follows a notice, which is why the worst outcomes almost always begin with unopened mail.

What to do now

1. File, even without payment. It stops the largest penalty and starts the clock on the time limits.
2. Pay what you can, then choose a plan for the rest. A short-term plan or an installment agreement beats leaving the balance open.
3. Rebuild your records. Pull exchange exports and wallet history for every year in question so your basis is documented.
4. Answer any notice by its deadline. A CP2000 or a balance-due notice is a proposal or a bill you can respond to, not a final judgment.
5. Get a crypto-tax pro involved if the years are messy or the numbers are large. Multiple exchanges, DeFi, staking, and missing basis are the cases where good help pays for itself.

Owing more than you can pay is a solvable problem. Pretending the income was not there is the version that compounds, and the reporting rules that took effect for the 2025 tax year make it easier to catch every year that follows.