You open an email, you see a number—and your stomach drops. Maybe it’s bigger than you expected…maybe a lot bigger. If that's where you are right now this tax season, you're not alone. A lot of business owners run into this situation, and it's not a dead end. What matters most isn't questioning past decisions. It's how you choose to respond. Waiting and panicking both make the situation worse. Taking action keeps your options open and protects your cash flow.
Here's how to handle a big tax bill without making it worse.
Why this catches so many owners off guard
Many small businesses don't know what they owe until late in the process, and it's easy to understand why. Day-to-day demands pull your focus as a founder: payroll, rent, vendors, inventory. Taxes get pushed to "later," and "later" keeps moving. Eventually that becomes avoidance, even when you never intended it to. Estimated payments start to slip. The balance grows quarter by quarter. So when the tax bill arrives, it feels sudden, even though the number has been gradually building all year.
The most important rule: don't ignore it, and don't panic
When you see a big number, most people do one of two things: they ignore it, or they panic. Neither helps. If you ignore it, interest and penalties keep stacking up. That's how something manageable turns into something really painful. If you panic, you're more likely to make rushed decisions, like cutting back on expansion plans or draining operating cash to pay the whole balance at once.
The IRS isn't in the business of surprise punishment, but they do charge interest and penalties if you don't respond. If you file on time but don't pay, the IRS adds a 0.5% penalty each month on the remaining balance—building over time and capping at 25%, with interest compounding daily on top of that. Filing on time keeps the steeper failure-to-file penalty off the table. Engaging early keeps you in control, and control is what you're trying to get back.
Understand your options
Here's something a lot of business owners don't realize: if you can't pay the full amount immediately, that doesn't mean you're out of options. Start by pinning down the actual number. Get a clear breakdown of what you owe in taxes, penalties, and interest from your return or your accountant.
If you can't cover it all, pay what you can and apply for a payment plan with the IRS. Individuals and sole proprietors can apply online if they owe $50,000 or less in tax, penalties, and interest. Businesses can apply online if they owe $25,000 or less and are current on their returns. If you don't fit those criteria, you can call 800-829-1040 (for individual returns) or 800-829-4933 (for business returns) to talk through your options. A short-term plan lets you clear the balance within about 180 days; a long-term installment agreement can spread payments over up to 72 months for individuals and around 24 months for businesses.
Payment plans aren't a loophole or a red flag. They're a standard option the IRS offers to millions of taxpayers every year. Once you're on an approved plan, the monthly late-payment penalty can drop from 0.5% to 0.25% for the months covered by that agreement.
If penalties are involved, also check whether relief applies. First Time Abate is a one-time break the IRS may offer if your returns are filed, you've paid or arranged to pay what you owe, and you've had a clean penalty record for the last three years. As of the 2026 filing season, the IRS has begun automatically applying First-Time Abatement for eligible taxpayers who have a clean 3-year history. If that doesn't fit, there's also reasonable cause relief for owners who planned to meet their obligations but couldn't file or pay on time due to circumstances outside their control—serious illness, natural disasters, or records they couldn't access when needed.
Don't wait to act
Time is what makes tax bills expensive. Not just the amount itself, but the interest and penalties that stack up when nothing happens. The earlier you engage, the more flexibility you have. Start paying what you reasonably can right away. Even partial payments reduce penalties and show good faith. If you need an installment plan, set it up. The IRS has more room to work with you when you come to them early. Waiting means fewer choices and a more rigid process.
Get help if you can
You can navigate this on your own. But if you're behind on estimated payments, staring at a notice you don't fully understand, or your numbers don't line up, this is the moment to bring in someone who can guide the process without pulling you from the day-to-day of running your business.
A CPA can review your return against your records, spot missed deductions, and help you file correctly. They'll also know the best approach for working with the IRS: what to file, what to pay, what to document, and when to call. If the main issue is a balance due, an Enrolled Agent (EA) is also worth considering. EAs are tax professionals licensed by the IRS who specialize in exactly this kind of situation.
To keep the first call efficient, share three things upfront: your draft return or year-end totals, any IRS letters you've received, and what you can realistically pay per month without squeezing payroll or vendors. Getting help early reduces mistakes, stress, and long-term cost. Even one focused consult can turn this from a scramble into a clear path forward.
Make the next bill predictable
Big tax bills usually come from surprises that build up quietly over the year. Relay1 helps you set aside tax money as it comes in, keep expenses organized, and see your real cash position—so you know what you owe before the IRS tells you. See how Relay helps you stay ahead of taxes year-round.
1Relay is a financial technology company and is not an FDIC-insured bank. Banking services provided by Thread Bank, Member FDIC. FDIC deposit insurance covers the failure of an insured bank. Certain conditions must be satisfied for pass-through deposit insurance coverage to apply.
