Yes, you can write off more than you make on taxes, but only when the excess comes from a business or investment activity, and only after the loss survives a stack of dollar limits the tax code applies before anything reduces your income. Personal deductions like the standard deduction or mortgage interest can zero out your income, nothing more. A genuine business or investment loss can go further, carrying into future tax years, though rarely at the full amount you’d expect.
What Kind of Loss Can Actually Exceed Your Income
The tax code splits losses into categories that behave very differently. A net operating loss, or NOL, arises when your allowable business deductions for the year exceed your gross income. Sole proprietors, partners, S corporation shareholders, and farmers can all generate one.1Office of the Law Revision Counsel. 26 USC 172 – Net Operating Loss Deduction Investment losses on stocks and other capital assets follow a separate track with a tight annual cap. Personal deductions follow a third track and cannot produce a loss at all.
That split matters because the question “can I write off more than I make” almost always turns on which bucket the deduction sits in. A large mortgage payment or a generous year of charitable giving cannot create a deductible loss you carry forward. A money-losing side business or a bad year on the stock market can.
Carrying a Business Loss Into Future Years
When business deductions exceed income, the resulting NOL doesn’t disappear. Under current law, you carry it forward indefinitely and use it to offset taxable income in later years.1Office of the Law Revision Counsel. 26 USC 172 – Net Operating Loss Deduction There is one significant restriction: the carryforward can wipe out only 80% of your taxable income in any given future year. Carry $50,000 forward, earn $40,000 next year, and $32,000 of the loss gets used. The remaining $18,000 waits in your carryforward bank for the year after.
Backward carryovers are essentially gone for most taxpayers. Farming losses can still be carried back two years, but everyone else moves forward only.2Internal Revenue Service. Instructions for Form 172 The IRS expects clean records showing every expense that produced the loss was ordinary and necessary for the business. A weak paper trail during an audit can undo the whole deduction.
The $3,000 Ceiling on Investment Losses
Capital losses on investments play by their own rules. If your losses from selling stocks and other capital assets exceed your capital gains for the year, you can deduct the excess against ordinary income up to $3,000, or $1,500 if you’re married filing separately.3Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses Anything left over rolls into the next year, where the same $3,000 ceiling applies again.
A single big loss can take a very long time to burn off. Sell a stock at a $50,000 loss with no offsetting gains, and you’ll spend roughly 17 years using it up at $3,000 a year. The loss never expires, but the annual cap keeps it trickling out. Capital losses also cannot create a net operating loss on their own. They live in a separate lane from the business-loss machinery.
The Filters a Business Loss Must Pass
A business loss rarely reaches your tax return at full size. It has to clear a specific sequence of limitations, and each one can trim it.
Basis
Partners and S corporation shareholders can deduct their share of the entity’s losses only up to their adjusted basis in the partnership interest or S corp stock, plus any direct loans they personally made to the company. Guaranteeing a bank loan to your S corporation does not create basis. Losses that exceed basis suspend and carry forward until you restore basis through contributions or income. Sell your entire interest before using them, and they’re gone.4Internal Revenue Service. S Corporation Stock and Debt Basis
At-Risk
You can only deduct losses up to the amount you actually have “at risk” in the activity: money and property you contributed, plus any borrowed money for which you’re personally liable.5Office of the Law Revision Counsel. 26 U.S. Code 465 – Deductions Limited to Amount at Risk Nonrecourse debt where you carry no personal exposure doesn’t count. Losses blocked here carry forward automatically.
Passive Activity
A business you don’t materially participate in, plus most rental real estate, is a “passive activity.” Losses from passive activities can only offset income from other passive activities. They cannot touch your W-2 wages or your portfolio income from dividends and interest.6Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited Disallowed passive losses suspend and carry forward until you generate passive income or dispose of the entire activity in a taxable transaction. Sell a rental property with years of suspended losses, and those losses finally unlock all at once.
The Excess Business Loss Cap
Even after clearing every prior filter, total business loss for the year cannot exceed a statutory dollar cap. For 2026, the threshold is $256,000 for single filers and $512,000 for joint filers.7Internal Revenue Service. Revenue Procedure 2025-32 A joint filer with a $900,000 business loss and $700,000 in wages and investment income uses only $512,000 of the loss this year. The remaining $388,000 becomes an NOL carryforward, subject to the 80% rule in future years.8Internal Revenue Service. Instructions for Form 461
This cap was originally scheduled to expire, but the One, Big, Beautiful Bill Act made it permanent. The thresholds adjust annually for inflation. The 2026 amounts are a significant drop from 2025’s $313,000 and $626,000 because the new law reset the baseline, not just the inflation index.9Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
Rental Property Owners Have Two Carveouts
Rental real estate is passive by default, but two exceptions let some owners deduct rental losses against wages.
Active participation gets you the smaller break. If you make management decisions like approving tenants and setting rent, and you own at least 10% of the property, you can deduct up to $25,000 in rental losses against non-passive income. The allowance phases out by $1 for every $2 of modified adjusted gross income above $100,000 and disappears entirely at $150,000.10Internal Revenue Service. Instructions for Form 8582
Real estate professionals get a broader one. Spend more than 750 hours a year in real property businesses where you materially participate, and have those hours amount to more than half of all your professional work for the year, and your rental losses stop being passive.6Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited They can then offset wages and other active income with no $25,000 cap. On a joint return, only one spouse needs to qualify, but that spouse has to meet both tests independently.
The Hobby Loss Trap
Every rule above assumes you’re running a real business. If the IRS decides your activity is a hobby, you cannot deduct expenses beyond what the activity earned. The line: an activity that doesn’t turn a profit in at least three of the last five tax years, or two of seven for horse breeding, training, showing, or racing, triggers a presumption that it isn’t a profit-seeking venture.11Office of the Law Revision Counsel. 26 USC 183 – Activities Not Engaged in for Profit
Failing the profit test shifts the burden to you. The IRS then weighs whether you actually intended to make money based on factors including:
- How much time and effort you put in and whether you run the activity in a businesslike way
- Whether you’ve studied the field or hired advisors to improve profitability
- Whether you depend on the activity for your livelihood
- Whether losses stem from startup costs or bad luck rather than indifference
- Whether you’ve changed your approach after unprofitable periods
- Whether assets used in the activity are expected to appreciate
When the IRS classifies an activity as a hobby, deductible expenses stop at hobby income. Someone earning $2,000 selling pottery cannot claim $7,000 in kiln and material costs to create a $5,000 write-off against their day-job wages.11Office of the Law Revision Counsel. 26 USC 183 – Activities Not Engaged in for Profit The excess is simply gone. No carryforward, no future benefit. This is the rule that most often catches side-hustle owners trying to write off more than they earn.
Personal Deductions Cannot Create a Loss
The standard deduction, mortgage interest, charitable contributions, and medical expenses can reduce your taxable income to zero but no further. For 2026, the standard deduction is $16,100 for single filers and $32,200 for married couples filing jointly.9Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill With $10,000 of adjusted gross income and a $16,100 standard deduction, your taxable income drops to zero and the extra $6,100 provides no tax benefit. It doesn’t carry forward. It doesn’t become a loss.
Refundable credits like the Earned Income Tax Credit or the refundable portion of the Child Tax Credit are a separate matter. Those can produce a refund even when you owe no income tax, but they work as credits against tax owed, not as deductions that create a carryforward loss.
An NOL Doesn’t Cut Your Self-Employment Tax
One costly surprise: a net operating loss carryforward does not reduce self-employment tax. The statute defining net earnings from self-employment explicitly excludes the NOL deduction from the calculation.12Office of the Law Revision Counsel. 26 U.S. Code 1402 – Definitions If you had a terrible year in 2025, carried the loss forward, and earned $80,000 in self-employment income in 2026, the carryforward cuts your income tax but you still owe self-employment tax on the full $80,000 of net earnings. At the combined 15.3% Social Security and Medicare rate, that’s a bill many people don’t plan for when they build their strategy around a carryforward.