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

Certified invoicing — unlimited and free. Forever.

Create and send invoices to the Tax Authority in seconds — via web, app, or WhatsApp (voice & text).

Get started

See demo

Built for Companies, Sole Traders, and Independent Entrepreneurs providing services in Portugal.

AT № 3041

Certified by the Tax Authority

24/7

Instant support

10,000+

Satisfied clients

+7M €

Billed with FIZ (monthly)

4,8 ★

Average rating on App Store & Google Play

Free forever

No subscriptions, no limits, no tricks. Just reliable, certified invoicing — always free for you.

Now even in chat!

Create and send invoices directly in the chat you already use. Type or speak — your invoice is ready.

Personalize your invoices

Upload your logo, customize documents to match your brand identity, and add your IBAN for hassle-free transactions.

Get paid faster (Coming soon)

Let clients pay via Mastercard, Visa, MBWay, or Multibanco with FIZ’s payment link.

Trusted Partners

Certified and fully integrated with official institutions

Certified by
AT №3041

Invoicing

Invoice without complications — fast, simple, and professional. Invoicing with automatic submission to AT is free forever.

Access via web and mobile app (Android & iOS)

Unlimited invoices

Unlimited clients

Automatic communication with AT (series and invoices)

Import of clients and items

Import of previous invoices from the Tax Authority portal

Multiple accounts under the same login

Your logo on invoices

Send invoices by email

Multiple accounts under the same login

Export to SAF-T and excel

Dashboard

Digital document archive

Print in A4 and receipt format

Management & Access

Discover advanced features in paid plans.

Invoice issuing via WhatsApp (voice and text)

Scheduled invoices

Automatic VAT rate suggestion on invoices

Multi-user access

Get paid

Allow clients to pay invoices through a payment link automatically generated by FIZ.

Mastercard & Visa

MBWay

Multibanco

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

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

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

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.

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

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.

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

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.

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

Everything you need to know about FIZ

Why choose FIZ for your invoicing?

Unlimited and free: use FIZ with no restrictions or hidden costs.
Simplify invoicing: intuitive and efficient invoice creation and management.
Automatic VAT calculation: ensure accuracy and compliance.
Automatic submission to the Tax Authority: no manual work on the AT portal.
Integrated payment links: get paid faster via MBWay, Multibanco, Visa, or Mastercard.
Attractive invoice design: impress clients with a professional look.

Why choose FIZ for your invoicing?

Unlimited and free: use FIZ with no restrictions or hidden costs.
Simplify invoicing: intuitive and efficient invoice creation and management.
Automatic VAT calculation: ensure accuracy and compliance.
Automatic submission to the Tax Authority: no manual work on the AT portal.
Integrated payment links: get paid faster via MBWay, Multibanco, Visa, or Mastercard.
Attractive invoice design: impress clients with a professional look.

Why choose FIZ for your invoicing?

Unlimited and free: use FIZ with no restrictions or hidden costs.
Simplify invoicing: intuitive and efficient invoice creation and management.
Automatic VAT calculation: ensure accuracy and compliance.
Automatic submission to the Tax Authority: no manual work on the AT portal.
Integrated payment links: get paid faster via MBWay, Multibanco, Visa, or Mastercard.
Attractive invoice design: impress clients with a professional look.