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Your Tax Shield

Every declaration filed with FIZ comes with a Tax Guarantee — up to 1.500€ depending on your plan and backed by our elite team so you never face the system alone.

See all plans in detail

Each statement is verified by a certified accountant.

Resposta em menos de 24h para pedidos urgentes

Resposta em menos de 24h
para pedidos urgentes

Response in less than 24h for urgent requests

Full coverage of Portuguese tax law

Tax Guarantee — up to 1.500€ covered per declaration

Your Tax Shield

Accountant

Prepares and adjusts reports instantly.

Tax specialist

Interprets requests from AT or Social Security, ensuring compliance without overpaying.

Lawyer

Drafts official requests and letters.

Priority contact

Every case answered within 24h.

Full case management

We stay with you until the issue is resolved.

Peace of mind

We know the rules, the pitfalls, and the shortcuts.

Before & After

Before / After — without Tax Shield vs. with FIZ Tax Shield

Unexpected request from AT

Before

After

Unexpected request from AT

João received an unexpected letter from the AT and didn’t know where to start.

The Tax Shield team prepared the required response within 48 hours — no fines, no stress.

Before

After

Social Security fine

After

Before

Social Security miscalculated the contribution and issued a fine.

Our team prepared the formal documentation proving the declaration was correctly submitted. Social Security accepted it and the fine was cancelled.

Compliance question from AT

Sofia received a complex compliance question from the AT and didn’t know the legal answer.

Our lawyer drafted the official response, which Sofia submitted to the AT. The case was closed in 3 days.

Before

After

FIZ Tax Shield — peace of mind, guaranteed.

More than automation: real confidence. Tax Shield protects you from risk — with a guarantee of up to 1.500€ per declaration and expert support from accountants, tax specialists, and lawyers at your side.

Join now

€

Frequently Asked Questions

What does the FIZ Tax Shield cover?

If you ever get fined by AT or Social Security because of an error or submission in a declaration you filed with FIZ, we’ve got you covered.

Up to €500 per declaration on Auto
Up to €1,500 per declaration on Prime

Even if the mistake was yours, we’ll take care of the fine.

What does the FIZ Tax Shield cover?

If you ever get fined by AT or Social Security because of an error or submission in a declaration you filed with FIZ, we’ve got you covered.

Up to €500 per declaration on Auto
Up to €1,500 per declaration on Prime

Even if the mistake was yours, we’ll take care of the fine.

What does the FIZ Tax Shield cover?

If you ever get fined by AT or Social Security because of an error or submission in a declaration you filed with FIZ, we’ve got you covered.

Up to €500 per declaration on Auto
Up to €1,500 per declaration on Prime

Even if the mistake was yours, we’ll take care of the fine.

What is not covered?

Who is covered?

If I make a mistake, am I still covered?

Does the Tax Shield also pay the taxes due?

AT № 3041

NIPC 517696835

1200-082, Lisbon, Cais do Tojo 24