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The first in Portugal
Financial assistant for self-employed professionals
Financial assistant for self-employed professionals
Built for service providers: certified invoices, automatic tax submissions, expert support, and maximum protection from our tax shield team.
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
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Trusted Partners
Certified and fully integrated with official institutions
Certificada pela
AT №3041
Plans
VAT Exempt
Subject to VAT
FIZ Base
For those who want to try FIZ and issue certified invoices — free forever.
0
€
forever
Tax Shield
FIZ Auto
Forget bureaucracy and let FIZ handle everything for you.
9
,99
€
per month, including VAT
FIZ Prime
Total peace of mind with AI tax assistant, priority support, and maximum protection.
14
,99
€
per month, including VAT
Plans
VAT Exempt
Subject to VAT
FIZ Base
For those who want to try FIZ and issue certified invoices — free forever.
0
€
forever
Tax Shield
FIZ Auto
Forget bureaucracy and let FIZ handle everything for you.
9
,99
€
per month, including VAT
FIZ Prime
Total peace of mind with AI tax assistant, priority support, and maximum protection.
14
,99
€
per month, including VAT
Plans
VAT Exempt
Subject to VAT
FIZ Base
For those who want to try FIZ and issue certified invoices — free forever.
0
€
forever
Tax Shield
FIZ Auto
Forget bureaucracy and let FIZ handle everything for you.
9
,99
€
per month, including VAT
FIZ Prime
Total peace of mind with AI tax assistant, priority support, and maximum protection.
14
,99
€
per month, including VAT
Rating ★ 4.8
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.
Ana Lança
Love this app. Free and intuitive. Best part: invoices go straight to the Tax Authority — no need to send the SAFT file every month.
Well Cardoso
Excellent! A very complete and free invoicing system. I recommend it!
Rating ★ 4.8
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.
Ana Lança
Love this app. Free and intuitive. Best part: invoices go straight to the Tax Authority — no need to send the SAFT file every month.
Well Cardoso
Excellent! A very complete and free invoicing system. I recommend it!
Rating ★ 4.8
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.
Ana Lança
Love this app. Free and intuitive. Best part: invoices go straight to the Tax Authority — no need to send the SAFT file every month.
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.