The tax season doesn't end on April 15th. We provide year-round support to handle IRS letters, correct filing errors, and represent you during audits so you never face the IRS alone.
Post-filing support refers to the professional tax services provided after a tax return has been submitted to the IRS. This phase of tax administration involves addressing inquiries arising from filed returns, such as responding to IRS notices (CP2000), and filing amended returns (Form 1040-X) to correct errors. Comprehensive post-filing support also includes identity theft restoration and assisting taxpayers with obtaining transcripts or reconstructing lost records for mortgage or loan applications.


Receiving a letter from the IRS can be intimidating, but it is often just a request for clarification. Our notice response services handle the communication for you. We analyze codes like CP2000 (Underreporter Inquiry) or CP14 (Balance Due) to verify their accuracy. If the IRS is wrong, we draft the dispute letter; if they are right, we guide you on the best payment resolution to avoid escalating penalties.

If you discovered a mistake after hitting "submit"—whether it’s a forgotten W-2, a missed credit, or an incorrect filing status—our amended return services can fix it. We prepare and file Form 1040-X to correct errors from the past three years. This process is essential not only for compliance but often results in additional refunds for clients who originally missed valuable deductions.
Software Support vs. Human Representation

Most "audit support" purchased through tax software is actually just a third-party insurance policy with limited scope. It often requires you to do the legwork while a call center agent reads from a script. JK Tax Service provides direct, personal representation. We don't just tell you what to do; we talk to the IRS agents for you, leveraging years of experience to interpret the tax code and negotiate outcomes that software algorithms simply cannot achieve.
Get StartedYes, you can file an amended return (Form 1040-X) after receiving your refund. If the amendment results in you owing money, you should file it and pay the tax as soon as possible to minimize interest. If the amendment results in an additional refund, you generally have up to three years from the original filing date to claim it.
If you are a client of JK Tax Service, we keep digital copies of your returns on file. If you filed elsewhere, you can request a "Tax Return Transcript" from the IRS using the "Get Transcript" tool on IRS.gov or by filing Form 4506-T. Transcripts are often required for mortgage and student loan applications.
The duration of an audit varies significantly by type. A correspondence audit (by mail) might be resolved in 3 to 6 months. An office or field audit (in-person) can take a year or more depending on the complexity of the issues and the organization of your records. Our goal is to expedite this process by providing clear, organized documentation immediately.
Filing an amended return does not automatically trigger an audit, but the IRS does review amended returns manually (unlike the automated processing of original returns). If your amendment claims a large refund or significantly changes your income without clear explanation, it may draw closer scrutiny. We ensure every amendment is fully substantiated to prevent this.