IRS notices and letters
Find the notice or letter number—often beginning with CP or LTR—near the top or upper-right corner. Compare the notice with the return and records for that tax year. The IRS advises taxpayers to respond by the stated due date when a response is requested; missing that date can affect appeal or collection rights.
Search an IRS notice or letter on IRS.gov ↗
Back taxes and unfiled returns
Resolve missing returns before guessing at a payment solution. The amount the IRS estimates without a filed return may not reflect deductions, credits, basis, or business expenses you can document. Gather wage and income records, prior returns, notices, and any proof of estimated payments. An IRS Online Account may provide transcripts and account balances.
Access an IRS Individual Online Account ↗
Balances and payment plans
File on time even if you cannot pay the entire balance. Paying what you can may reduce additional interest and penalties. Depending on the facts and amount owed, the IRS may offer short-term or monthly payment arrangements. Eligibility, setup fees, and required financial information vary.
Review the IRS Online Payment Agreement application ↗
Amended returns
A return may need amendment when filing status, income, dependents, deductions, credits, or tax liability changes. Do not automatically amend for a math error the IRS has already corrected. Federal changes can also affect Ohio and local returns, so the full filing set should be reviewed together.
Read the IRS amended-return guidance ↗
Identity theft and IP PINs
An IRS Identity Protection PIN is a six-digit number that helps prevent someone else from filing a federal return using your taxpayer identification number. If the IRS assigned you an IP PIN, include the current number when filing original or amended returns. Treat it like sensitive tax information.
Get or retrieve an IRS IP PIN ↗
This page provides general educational information. Deadlines, remedies, and appeal rights depend on the notice and your facts. Use the instructions on your IRS letter and seek individualized professional advice when needed.