Invoicing

For TI / ENI

For Companies

For Accountants

Help

Invoicing

For TI / ENI

Social Security

VAT

Tax Shield

Plans

For Companies

For Accountants

Help

Iniciar sessão

Aderir ao FIZ

The first in Portugal

Financial assistant for freelancers

Certified invoicing and VAT & Social Security filings done automatically — with Tax Shield protection

AT № 3041

Certified by the Tax Authority

24/7

Instant support

10.000+

Satisfied clients

4,8 ★

Average rating on App Store & Google Play

Less bureaucracy. More life.

Everything you need — in one place

A single platform to issue certified invoices, automatically calculate and submit Social Security and VAT declarations, and stay in full control of your finances.

Invoice in seconds

Automatic SocSec and VAT

Instant tax advice

Smart Business Card

Receive and send payments

Everything you need — in one place

A single platform to issue certified invoices, automatically calculate and submit Social Security and VAT declarations, and stay in full control of your finances.

Invoice in seconds

Automatic SocSec and VAT

Instant tax advice

Smart Business Card

Receive and send payments

Everything you need — in one place

A single platform to issue certified invoices, automatically calculate and submit Social Security and VAT declarations, and stay in full control of your finances.

Invoice in seconds

Automatic SocSec and VAT

Instant tax advice

Smart Business Card

Receive and send payments

Tax Shield

And here’s what makes it stronger: every declaration you file with FIZ is backed by our guarantee. If you ever face a fine, we cover up to 1.500€. That means total confidence. Zero risk.

And even more — you’re never alone. With your dedicated accountant, lawyer, and tax consultant, our team steps in immediately whenever you need support.

Learn more

Trusted Partners

Certified and fully integrated with official institutions

Certificada pela
AT №3041

Plans

VAT Exempt

Subject to VAT

Ideal for TI/ENI under the VAT exemption regime (art.53 / art.9)

FIZ Base

For those who want to try FIZ and issue certified invoices — free forever.

0 €

forever

Tax Shield

Not included

FIZ Auto

Forget bureaucracy and let FIZ handle everything for you.

9 ,99

€

per month, including VAT

Tax Shield

Protection up to 500€ guaranteed per declaration

FIZ Prime

Total peace of mind with AI tax assistant, priority support, and maximum protection.

14 ,99

€

per month, including VAT

Tax Shield

Protection up to 1.500€ guaranteed per declaration

Learn more

Plans

VAT Exempt

Subject to VAT

Ideal for TI/ENI under the VAT exemption regime (art.53 / art.9)

FIZ Base

For those who want to try FIZ and issue certified invoices — free forever.

0 €

forever

Tax Shield

Not included

FIZ Auto

Forget bureaucracy and let FIZ handle everything for you.

9 ,99

€

per month, including VAT

Tax Shield

Protection up to 500€ guaranteed per declaration

FIZ Prime

Total peace of mind with AI tax assistant, priority support, and maximum protection.

14 ,99

€

per month, including VAT

Tax Shield

Protection up to 1.500€ guaranteed per declaration

Learn more

Plans

VAT Exempt

Subject to VAT

Ideal for TI/ENI under the VAT exemption regime (art.53 / art.9)

FIZ Base

For those who want to try FIZ and issue certified invoices — free forever.

0 €

forever

Tax Shield

Not included

FIZ Auto

Forget bureaucracy and let FIZ handle everything for you.

9 ,99

€

per month, including VAT

Tax Shield

Protection up to 500€ guaranteed per declaration

FIZ Prime

Total peace of mind with AI tax assistant, priority support, and maximum protection.

14 ,99

€

per month, including VAT

Tax Shield

Protection up to 1.500€ guaranteed per declaration

Learn more

Rating ★ 4.8

Download on the App Store

Get it on Google Play

Katherine P

Easy and practical to use! I love it!

Rui Fernandes

Very intuitive app, simple to use, excellent results — and above all, it’s free! Congrats to the creators.

Renato

Practical and intuitive — issuing an invoice is easier than with the Tax Authority. Support is efficient.

António Sequeira

Very easy to use and a really helpful app. Switching to FIZ was worth it.

Well Cardoso

Excellent! A very complete and free invoicing system. I recommend it!

Rating ★ 4.8

Download on the App Store

Get it on Google Play

Katherine P

Easy and practical to use! I love it!

Rui Fernandes

Very intuitive app, simple to use, excellent results — and above all, it’s free! Congrats to the creators.

Renato

Practical and intuitive — issuing an invoice is easier than with the Tax Authority. Support is efficient.

António Sequeira

Very easy to use and a really helpful app. Switching to FIZ was worth it.

Well Cardoso

Excellent! A very complete and free invoicing system. I recommend it!

Rating ★ 4.8

Download on the App Store

Get it on Google Play

Katherine P

Easy and practical to use! I love it!

Rui Fernandes

Very intuitive app, simple to use, excellent results — and above all, it’s free! Congrats to the creators.

Renato

Practical and intuitive — issuing an invoice is easier than with the Tax Authority. Support is efficient.

António Sequeira

Very easy to use and a really helpful app. Switching to FIZ was worth it.

Well Cardoso

Excellent! A very complete and free invoicing system. I recommend it!

Frequently Asked Questions

Does FIZ actually submit to Social Security and VAT?

Yes. Fully integrated with Social Security and the Tax Authority, certified by AT nº 3041. Submissions are electronic, secure, and always on time.

Does FIZ actually submit to Social Security and VAT?

Yes. Fully integrated with Social Security and the Tax Authority, certified by AT nº 3041. Submissions are electronic, secure, and always on time.

Does FIZ actually submit to Social Security and VAT?

Yes. Fully integrated with Social Security and the Tax Authority, certified by AT nº 3041. Submissions are electronic, secure, and always on time.

Do I need to calculate values manually?

Can I adjust my Social Security income base?

Will I get reminders?

Do I still need an accountant?

Can I cancel anytime?

What do I need to get started?

Is FIZ safe?

Does FIZ automatically pay my taxes?

How does support work?

Are prices final or will VAT be added?

Your financial assistant is ready

Start today — no paperwork, no hassle.

Start now

★★★★★ 4.8/5

on the App Store and Google Play

★★★★★ 4.8/5

on the App Store and Google Play

AT № 3041

NIPC 517696835

1200-082, Lisbon, Cais do Tojo 24

Invoicing

Soc.Security Declaration