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How it works

Here’s how to request your IRS additional 2-month extension to December 15, 2025, – in just four steps.

1

Confirm eligibility

You must have already filed a Federal Extension (Form 4868) extending your deadline to October 15, 2025, and meet eligibility requirements.

2

Request the additional extension

This 2-month extension is not automatic – it requires a written justification letter and is granted at the IRS's discretion. Request your extension, and TFX will prepare and mail your letter to the IRS on your behalf.

3

Get tracking link

We'll notify you as soon as your 2-month extension is mailed and send you the tracking link. Once your extension is delivered, save the confirmation for your records.

4

File your tax return by December 15

Use the extra time to gather documents and file accurately – without the stress of rushing before the deadline.

Why apply for a December 15 extension?

The additional extension gives you a final, IRS-approved opportunity to move your tax deadline past October 15. Here are the most common reasons expats choose to request it:

Final chance to extend beyond October 15 – for expats who need more time.
Complex filings – foreign income, FTC/FEIE, K-1s, investments, business filings.
Still waiting on documents – late foreign statements, pension/portfolio reports, employer forms.
Mailing option handled – we prepare and send the extension request letter to the IRS for you.
Simplicity & peace of mind – stay compliant without the last-minute scramble.

To use the IRS 2-month additional tax extension to December 15, you must have already filed a federal extension (Form 4868) by October 15. TFX does not independently verify this requirement – taxpayers are solely responsible for confirming their eligibility.

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Frequently asked questions

1. Who can apply for the December 15 extension?

US taxpayers abroad who have already filed Form 4868 to extend the tax filing deadline to October 15. The December 15 extension is discretionary and requires a written letter to the IRS. Carefully check your eligibility with a tax professional.

2. Can I file another tax extension after October 15?

If you have already used Form 4868 to move your deadline to October 15, you can ask the IRS for more time until December 15. To do this, you must send them a letter explaining why you need extra time. This extension isn't automatic – the IRS has to approve it.

3. What if I missed the October 15 federal extension deadline?

If you didn't file Form 4868 by October 15, you're not eligible for the December 15 extension. File as soon as possible; we can help you minimize penalties and interest and get you compliant.

4. How does Taxes for Expats file this extension?

We gather your details, draft your request letter, and mail it to the IRS for you. You'll receive status updates and instructions for filing by December 15.

5. Does the December 15 extension also extend the time to pay?

Extensions only extend the filing deadline. If you expect to owe, pay as soon as possible to limit interest charges.

6. What happens if the IRS denies the extension request?

We'll notify you promptly. You should file as soon as possible to reduce penalties and interest. Our team can help you determine the best next steps.

Additional 2-month extension until December 15 for expats

How it works

Why apply for a December 15 extension?

Trusted by 50,000+ clients

American abroad?

Frequently asked questions