Understanding IRS Form 1118: Foreign Tax Credit for Corporations

Do your U.S. corporations earn income in another country and pay tax there? Well, remember that you may not be required to pay tax on the same income twice. Confused? Don't be. Corporations can claim the foreign tax credit (FTC), which reduces U.S. tax by the amount of foreign income tax already paid, by filing IRS Form 1118.

If you own a business, you can use this form to save a considerable amount on taxes, although it is the most complicated. Don't worry, in this blog, we will cover everything you need to know about IRS Form 1118.

What is Form 1118?

IRS Form 1118, Foreign Tax Credit Corporations, is a form used by U.S. corporations to claim a credit for the foreign income taxes paid or accrued. Similar to Form 1116, which individuals use, Form 1118 is the corporate version, and it is filed along with Form 1120, which is the U.S. corporation income tax return.

To make it easy for you, you can understand it like Form 1118 acts like a message from you to the IRS, which states that our company has paid tax on this income already in another country, so we must not be taxed twice.

Now comes the main question: Does every corporation need to file Form 1118? The answer is no; let's understand who is required to file Form 1118.

Who Needs to File Form 1118?

Under Section 901, a corporation typically files Form 1118 if it wants to claim a foreign tax credit. Also, even if your corporation does not claim the credit, you may still have to file certain schedules of Form 1118 if it has adjustments related to:

• Overall foreign losses
• Overall domestic losses
• Separate limitation losses

Keep in mind that if your company has international operations, you must review your filing requirement carefully, as these rules are technical. Moving further, let's discuss what all Form 1118 includes.

What Does Form 1118 Include?

Apart from the main form, there are several supporting schedules covered by Form 1118. The table below lists some of the most important schedules:

Additionally, corporations should prepare a separate Form 1118 for each category of foreign income in many cases. Next, let's understand the meaning of income "baskets".

What are Income "Baskets"?

According to the IRS, your foreign income needs to be divided into different categories, which are called separate limitation categories. Some of the common baskets include:

• General category income
• Passive category income
• Foreign branch income
• Section 951A (GILTI) income

Each income basket has its own limit of foreign tax credit. Additionally, to claim a credit larger than permitted, this rule prevents companies from merging high-tax and low-tax foreign income.

Further, do you know that under the revision of Form 1118, some new updates were introduced? Let's learn about these new changes for 2026.

What's New in 2026?

During the revision of Form 1118 in December 2025, several new updates were included under the One Big Beautiful Bill Act (OBBBA). Some of the important changes include:

• A line for certain disallowed taxes has been added to Schedule G.
• To report taxes related to GILTI previosuly taxes earnings (PTEP), new rules are introduced under Section 960(d)(4).
• Embedded worksheets are removed to simplify IRS instructions. Also, most of the calculations can now be done directly on the form.

Primarily, these changes affect those corporations that have international subsidiaries or requirements related to GILTI reporting. Now comes another question: to calculate CAMT, can you use Form 1118? Let's understand this.

Can Form 1118 Be Used for CAMT?

No, under Section 55, you cannot use Form 1118 to compute the Foreign Tax Credit for the corporate alternative minimum tax (CAMT).

Instead of Form 1118, you should use Form 4626 to calculate the foreign tax credit if your corporation is subject to CAMT.

Moving further, let's discuss the deadline for filing Form 1118.

When is Form 1118 Due?

You are required to file Form 1118 together with Form 1120. So, for corporations following the calendar year:

• Original due date: April 15
• Extended due date: October 15 (after filing Form 7004)

Always keep in mind that the extension gives you more time to file and not more time to pay. Hence, you must pay any tax due by the original deadline.

Moreover, if your company skipped claiming a foreign tax credit in an earlier year, you may still be eligible to recover it. You can do this by filing an amended return or using the carryback or carryforward rules, based on the IRS deadlines.

Do you know that, according to many tax professionals, Form 1118 is one of the most complicated tax forms? Let's learn the reason behind it.

Why is Form 1118 Considered So Complicated?

Form 1118 is considered one of the most complex tax forms according to many tax professionals. This is because the form carries several challenges, some of which include:

• Putting income into the correct basket
• Managing foreign currency conversions
• Computing deemed-paid foreign tax credits
• Ensuring correct reporting of foreign tax changes
• Assigning expenses between U.S. and foreign income

Do not make any mistakes in the form, as even a small error can attract questions from the IRS or reduce your available tax credit. Lastly, let's understand the use and importance of Form 1118 for a business owned by an NRI.

Form 1118 for NRI-Owned Businesses

Several NRIs own or manage U.S. corporations with their business operations in India or other countries. Form 1118 can be particularly important for such businesses:

If Your U.S. Company Has Operations in India

Assume your U.S. corporation has a branch/subsidiary in India and pays income tax in India. So, you may have to pay tax on the same profit again in the United States if you don't have the foreign tax credit.

With the help of Form 1118, corporations can claim credit for eligible Indian taxes and avoid the risk of double taxation.

If Your Company Owns an Indian Subsidiary

A lot of NRI business persons structure their business with both:

• A U.S. parent company
• An Indian operating company

The special rules in this case help determine the amount of Indian tax paid by the subsidiary, which can be claimed as a credit in the U.S. The company's overall tax burden can be significantly affected by these calculations.

GILTI Rules Matter

The GILTI (Global Intangible Low-Taxed Income) rules may apply to your U.S. corporation if it owns a controlled foreign corporation (CFC) in India. Under the updates made in Section 960(d)(4), the rule for calculating certain foreign tax credits related to GILTI has changed. Also, it is advised to reach out to a professional as these rules are technical.

To make it easier for NRIs, let's look at some key points to keep in mind.

Key Points for NRIs

If you own a U.S. corporation that has an Indian subsidiary, pays foreign income tax, earns income outside the U.S., or operates foreign branches. Then, it is highly probable that Form 1118 might be a part of your annual U.S. corporate tax filing.

Also, you can lower your overall tax liability and prevent paying tax twice on the same income by completing this form with proper attention and accuracy.

To Conclude

IRS Form 1118 helps U.S. corporations to claim the foreign tax credit and also prevent taxation twice on the same foreign income. However, the form involves various schedules, income categories, and foreign tax calculations. Also, some rules have been changed and introduced under the OBBBA, because of which it can become challenging to complete it correctly.

Moreover, NRI business owners following US-India corporate structures can ensure accurate filing by consulting a cross-border tax expert. Talking about experts, there's no better option than Savetaxs.

At Savetaxs, we have an entire team of experts familiar with the filing process. Our team can help you ensure accurate filing, maximize available tax credits, and also make sure you stay compliant with the laws of both the U.S. and India. Contact us right away, as we are actively working 24/7 across all time zones.