INDIVIDUAL TAX RETURN 1040

When do I have to file?
What deductions & penalties are there?
Is there a relationship between IRS 1040
and 100 AEAT?

VÍDEO
QUESTIONS AND ANSWERS
ABOUT INDIVIDUAL
TAX RETURN 1040

Find out the answers to the main questions about Individual Tax Return 1040 in 4 minutes.

AM I REQUIRED TO FILE 1040?

 

Required to file.
U.S. Persons (U.S. Citizens, Green Card Holders and Resident Aliens) are required to file annually regardless of:

· Where their income is earned.
· Where in the world do they live?
· Whether or not the U.S has a Tax Treaty with that country.
· Whether or not they also pay Foreign Taxes.

Nonresident aliens are required to file Form 1040-NR (U.S. Nonresident Alien Income Tax Return) if they received income from U.S. sources that is subject to U.S. income tax. This includes wages, salaries, tips, bonuses, rental income, U.S. business income, certain scholarships or fellowships, and, in some cases, capital gains. Nonresident students, teachers, and trainees temporarily present in the U.S. on F, J, M, or Q visas are also required to file Form 1040-NR if they received any income, even if the income may be exempt under a tax treaty.

Minimum to File

· If you file Single and you are under 65 by December 31, and your minimum gross income is $ 15,750 (2025). If you are 65 or older, your gross earned income must be at least $ 17,750 (2025), plus a new $6000 deduction (2025 to 2028).
· If you file as Married Filing Jointly, the minimum to file is $ 31,500 (2025) gross income. But if you file as Married Filing Separately, the minimum limit is $ 5 of gross income. . If you file as Head of Household, the minimum to file is $23,625.
· On the other hand, you are required to file the return if your net earnings from self-employment were at least $400, or if you owe taxes on unreported tips, retirement account distributions, capital gains, etc, or if you got advance premium tax credits (health insurance subsidies) or if you want to claim a refund or credit (like Earned Income Tax Credit or Child Tax Credit).

DOES IT ALWAYS HAVE TO BE SUBMITTED BEFORE APRIL 15TH?

File form 1040 by April 15th
Extension for resident abroad: 2 months

If you are U.S. Person, you qualify for an automatic extension of two month till June 15 without filing the Form 4868.
This extension gives you an extra 2 months to file and pay the tax, but interest will accrue from the original return due date on any unpaid tax.

Extension of 4 more months, filing Form 4868.

If you are still unable to file your return by the end of the 2-month period, you may receive an additional 4 months if you file Form 4868 no later than June 15.

This 4-month extension of time to file does not extend the time to pay your tax. All taxes must be paid before April 15th.

WHAT DEDUCTIONS CAN I APPLY?

 

Standard deductions (2025):
Single and Married Filing Separately $16, 100 – Married Filing Jointly $32,200 – Heads of the Household $24,150.

Additional Deductions for Age/Blindness (2026):

  • Single/HoH: An extra $2,050 if 65 or older or blind (or $4,100 if both).
  • Married Filing Separately/Jointly: An extra $1,650 per qualifying person if 65 or older or blind (or $3,300 if both). 

Foreign Earned Income Exclusion
Most commonly used exclusion for expats: $130,000 (2025)
Only from earned income.
You must live in another country.

Foreign Tax Credit
Let’s you deduct the amount of Foreign Taxes paid from the U.S. Tax liability.
If paid foreign taxes at higher rate, you can carry forward the excess paid for use in the subsequent 10 years.

Child Tax Credit
For children, dependents, up to 17 years old.
From 2018 to 2020 $1,400 refund ($2,000 Credit)
In 2023 was a refundable credit of $1,500 if younger than 17 and this year 2024 will be $2,000 but only $1,400 is refundable . In 2025, the credit is $2200, but only $1700 is refundable

TAX PREPARATION OFFICE AT ROTA NAVY BASE

Rota Navy Exchange (NEX) – Building 3300

 

We are open year-round, from 11:00 to 18:00 Mondays through Fridays, to serve all current and former members of the U.S. Armed Forces,  U.S. DoD Civilian employees, and their families. You can have your taxes prepared and filed from the Naval Station of Rota. Those who are stationed at the Morón Air Base, the National Support Elements in Madrid, Valencia (Spain) and Lisbon (Portugal) are also included.

Ask specific questions for free with no commitment on your part at the NEX office. We will start collecting the documentation needed to prepare your U.S. Individual Tax Return from January through June, from 11:00 to 18:00, Monday to Friday. The complete list of documents can be downloaded HERE.

Fortunately for our armed forces, most military installations offer tax support venues to help service members and their families. Now there is one in Rota. US Tax Consultants offers income tax support through professional IRS certified tax preparers. We understand military-specific tax issues, and this tax preparation service includes a FREE Consultation.

All members of the armed forces, retirees, and DoD Civilians living abroad are automatically eligible for a two-month extension through June 15th without filing Form 4868. If an extra extension is required, we will fill out Form 4868 upon request no later than June, 5.

 

ARE THERE ANY PENALTIES FROM THE IRS ON THE FORM 1040?

There are two types of penalties: failure-to-file and failure-to-pay. In any case, paying taxes must always be done before April 15; for filing late you can take in consideration the requested extensions, which do not apply to the failure-to-pay penalty.

The failure-to-file penalty is 5% of your balance due for every month (or part of a month) in which your taxes go unpaid. The amount you owe for this penalty will be reduced by the amount you owe for the failure-to-pay penalty. The maximum amount of this penalty is 25% of your unpaid taxes.

The failure-to-pay penalty is 0.5% of your balance due for each month (or part of a month) in which your taxes remain unpaid. This penalty will not exceed 25% of your unpaid taxes.

If both penalties apply to you during the same month, the failure-to-file penalty is reduced by 0.5% per month. The 25% cap applies to both penalties together.

DO I NEED A PROFESSIONAL TAX PREPARER?

Tax preparers of all backgrounds need an active PTIN to file tax returns on behalf of their clients. PTINs identify these professionals to the IRS and protect them from fraud.

A professional tax preparer can save you time and money, can answer your questions and resolve issues. The tax code is very complicated: Professional tax preparers keep up with it and all the changes each year. You gain peace of mind: Making mistakes can be very costly and reduce the risk of an audit. It takes the hassle out of doing it yourself.

Fees 2021 for the 1040

HOW MUCH DOES IT COST TO HAVE FORM 1040 PREPARED ?

The fee is for a current year Individual Federal Tax Return which includes the following Forms: 1040, 2555, 1116, Sch. A, B, C, D, and Sch. E, Schedules K-1’s, and Bank Interest/Dividend entries, and all brokerage transactions. We do not include Form 8938. Please, let us know whether you are required to file Form 8938, the principal document for complying with the FACTA regulations and we will prepare it for a fee.

Do you need to amend your previously filled tax Returns? Only if we have already prepared the original 1040, the fee will be €330,00. For all our clients who have not filed their returns before June 1st, we will provide a 4-month automatic extension (until October 15th)

Other obligatory forms and schedules

You can view the remaining fees for other required Forms and Schedules on the Fees – US Tax Consultants page. We will inform you in advance of any additional obligations and the estimated cost, if necessary. 

IF I MAKE A MISTAKE IN MY 1040, WHAT CAN I DO?

You simply have to submit an Amended Return, Form 1040X, to correct the errors that you have made in a return already filed.

If you amend your return before it is due (before June 15), then your amendment is on time, and no interest or penalty will accrue. Also, the IRS can be quite reasonable, especially for a first-time mistake.

The IRS advises that you generally must file Form 1040X to amend a return within three years from the date you filed your original tax return, or within two years of the date you paid the tax, whichever is later.

The four most common reasons to file an Amended Return are to correct an error or omission to your income, to change your filing status, to change your deductions, and to claim a credit or correct a credit. 

WHO SHOULD PREPARE MY 1040?
WHAT IF I HAVE TO FILE MODELO 100 FROM THE AEAT?

The IRS recommends that the preparation be done by a professional IRS Certified Tax Preparer.

In general, it is recommended that the same preparer handle both American and Spanish taxes, especially for IRS Form 1040 and AEAT Form 100.

This ensures the information is consistent. It is also important that the preparer understands the tax laws of both countries and has a deep understanding of the Double Taxation Treaty.

Otherwise, one or both returns may likely contain errors. 

At U.S. Tax Consultants, we are IRS-certified tax preparers and acceptance agents with over 65 years of experience in U.S. and Spanish tax filing.

WHY CHOOSE US TAX CONSULTANTS TO PREPARE THE 1040?

Experts in U.S. and Spanish taxation for over 65 years. We have been filing both US and Spanish taxes for over 65 years. Whether you have to file only the 1040 or also the AEAT Modelo 100, our experience guarantees results.

Quality. The reliability and experience of our professionals are guaranteed. Our quality controls prevent errors. That said, it is important that the information you provide us is accurate and up to date.

Tracking system for our clients. U.S. Tax Consultants has designed an email customer information tracking system (TMS) specifically for the 1040.

Credit card payment. You can pay securly by credit card.

WHAT DO I HAVE TO SEND YOU SO YOU CAN PREPARE OUR U.S. TAX RETURN?

Documentation
We always need a copy of your your most recent tax return, a copy of your U.S. Passport, and a copy of your Social Security Card, all up to date. We also need all W2 and 1099 froms your U.S. payers and/or financial entities in the U.S. and other countries.
If you are fiscal resident of Spain, we will also need a copy of your fiscal data issued after April 10 by the Spanish Tax Agency and your Spanish Tax Return, filed whenever it is filed.
If you have a property for rent, please use our Excel help, which you can download  HELPRENT
You can find the complete list of required documents at the List of required documents.

Uploading
It is essential that you upload the documentation to us via our website’s secure, encrypted file transfer system in the Client’s Area.

HOW LONG DOES IT TAKE TO PREPARE THE 1040?

We have developed the T.M.S. (Tracking Model System) which allows you to estimate how long it will take to complete the entire 1040 preparation process, defined in 8 phases. In each phase, you will receive an email confirming the current status and next steps.

Once all documentation is delivered, the estimated timeline, assuming no external setbacks, is 10 to 15 days.

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CONTACT US

 

info@ustaxconsultants.es         +34 915 194 392

Travesía de las Cañas, 2 – 28043 Madrid, Spain
Monday – Friday: 9am–2pm, Saturday & Sunday: Closed

El Peñayu, 15 – 33534 Piloña, Asturias, Spain

Naval Station Rota – Rota Gateway Mall – 11530 Rota, Spain
January to June. Mon. – Friday: 11m–6pm, Saturday & Sunday: Closed

 

info@ustaxconsultants.pt         +351 211 380 833

KNOW2GROW R. Dr. Augusto José da Cunha, Loja 3C 1495-240 Algés. Portugal.

Sitio do Alportel 32A – Sao Bras de Alportel – Algarve 8150-014, Portugal.