Complete Guide to Filing Model 145 for Spanish Tax Withholdings

Table of Contents


What is it?

Model 145 is a form utilized in Spain for individuals who need to communicate personal and family circumstances that affect tax withholdings. It’s often required for various administrative and employment-related procedures.

Who needs it?

Any individual residing in Spain who has significant changes in personal or family circumstances affecting their tax withholdings should file the Model 145. This includes changes in marital status, number of dependents, or any other personal financial change.


  1. Download the Form:

    • Go to the official website of the Agencia Tributaria (Spanish Tax Agency). Download Modelo 145 .
  2. Understand the Categories:

    • Familiarize yourself with the different sections of the form. These sections include personal details, marital status, number of dependents, disabilities, and residential status.
  3. Fill in Personal Details:

    • Enter your personal details such as full name, DNI/NIE (identification numbers), and address.
  4. Enter Marital Status Information:

    • Fill out your current marital status. This could be single, married, legally separated, etc.
  5. Include Dependents Information:

    • Add the number of dependents, which can be children or elderly family members that financially depend on you.
  6. Specify Disabilities:

    • If you or any of your dependents have disabilities, ensure you provide the necessary details.
  7. Provide Residential Status:

    • Indicate if you reside in Spain or another country and if you are a resident for tax purposes.
  8. Review and Sign:

    • Double-check all information to ensure accuracy, then sign the form.
  9. Submit the Form:

    • Submit the completed form to your employer or the relevant tax authorities.

Required Documents

  • Personal Identification:
    • DNI/NIE or passport.
  • Marital Status Proof:
    • Marriage certificate or certificate of legal separation.
  • Dependents Proof:
    • Birth certificates of children or legal documents of guardianship.
  • Disability Certificates:
    • Official disability certificate if applicable.
  • Residential Proof:
    • Proof of residence, such as utility bills or rental agreements.

Providers that can do it for you

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Additional details

  • It’s crucial to update this form whenever there’s a substantial change in your circumstances to ensure accurate tax withholdings.
  • Submitting incorrect information can lead to fines or incorrect tax calculations, so it’s advisable to seek professional help if you’re unsure about any part of the form.


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