When people say they owe "back taxes," they mean an unpaid balance the IRS has assessed for one or more prior tax years — income tax, plus the interest and penalties that accrue on top of it. The balance grows over time: the failure-to-pay penalty runs at 0.5% of the unpaid tax per month (up to 25%), and interest compounds daily on the tax and the penalties alike.
The good news is that the IRS would rather resolve a balance than let it sit uncollected. Congress built an entire framework — installment agreements, offers in compromise, and currently-not-collectible status — specifically for taxpayers who cannot pay in full. Which one fits you is a financial question, not a legal one, and it turns on a single number: what the IRS calculates you can realistically pay.
The 10-year collection clock (and why it matters)
Under IRC §6502, the IRS generally has ten years from the date a tax is assessed to collect it. This is the Collection Statute Expiration Date, or CSED. After it passes, the debt is legally extinguished — the IRS writes it off and can no longer levy, garnish, or lien for it.
The clock can pause ("toll") in certain situations — while an offer in compromise is pending, during bankruptcy, or when you’re living abroad — which extends the collection window. Understanding where you sit on the CSED timeline is often the single most important input into choosing a strategy, because a balance that’s close to expiring is handled very differently from a fresh assessment.
The four resolution paths
Almost every back-tax case resolves through one of four channels, ordered here roughly from "can pay over time" to "cannot pay at all":
- Installment Agreement — a monthly payment plan under IRC §6159. Streamlined approval is available for individuals owing $50,000 or less, with no financial disclosure required.
- Offer in Compromise — a settlement for less than the full balance under IRC §7122, available when you can show the IRS can’t realistically collect the full amount before the CSED.
- Currently Not Collectible — a hardship pause under which the IRS stops active collection because paying anything would prevent you from meeting basic living expenses.
- Pay in full or via short-term extension — for balances you can clear within 180 days, often the cheapest route because it minimizes accruing penalties and interest.
Get compliant first
Before the IRS will approve any resolution, you must be "in compliance" — all required returns filed and current-year withholding or estimated payments on track. This is non-negotiable: an installment agreement or offer will be rejected out of hand if you have unfiled returns. If you’re behind on filing as well as paying, the first move is almost always to file the missing returns.
What professional representation adds
You can negotiate with the IRS yourself. Many people do. What a licensed representative — an Enrolled Agent, CPA, or tax attorney holding a Form 2848 Power of Attorney — adds is a correct read of your Reasonable Collection Potential before you file anything, so you don’t offer more than you have to or apply for a program you won’t qualify for. They also take the phone calls, deadlines, and financial-statement work off your plate, and can move to release a levy or garnishment while the larger case is worked.