IRS Letter 2603C
Disallowance of Claim or Refund
IRS Letter 2603C informs you that the IRS has denied your claim for credit, refund, or adjustment related to a previously filed tax return. This letter typically follows the IRS’s review of an amended return or refund request that it found unsupported or not allowable under the tax code.
If you disagree, you have the right to appeal or respond, but there’s usually a limited window to act.
▸ Why Did I Receive Letter 2603C?
You may have received this letter because:
You filed a claim for refund or credit that the IRS reviewed and denied
You submitted an amended return (Form 1040-X) or claim based on deductions, credits, or overpayment
The IRS determined your documentation was incomplete, incorrect, or didn’t qualify
▸ What’s in the Letter?
Letter 2603C typically includes:
A clear statement that your claim or refund has been disallowed
The tax year(s) affected and the specific issue denied
A brief explanation of why the claim was rejected
Your right to appeal, and a deadline to do so (usually 30 days from the letter date)
- If you take no action, the denial becomes final — and the IRS will close the matter.
▸ What Should You Do?
Review the letter carefully. Identify what the IRS rejected and why.
Gather documentation to support your position, if you believe the decision is incorrect.
Decide whether to appeal — typically by submitting a written protest within 30 days.
Consult a tax professional before resubmitting or escalating the claim.
▸ When to Call a Tax Attorney
IRS refund claims can involve complex tax law and tight deadlines. A tax attorney can help if:
You believe the IRS wrongly disallowed your claim
You need to file a formal appeal or written protest
You want to explore your refund rights without triggering further issues
You’re unsure whether to pursue Tax Court action
We’ll help you understand your appeal options and fight for the refund you deserve.
▸ Don’t Lose a Valid Refund
If you received IRS Letter 2603C, the clock is ticking to respond.
Call Scammahorn Law Firm at (903) 595-1000 or fill out this quick form to schedule a consultation and get peace of mind.