Trusted by 5,000+ Portuguese clients
AI accounting & tax filing
Designed for companies, independent professionals, and sole traders
Personalise your invoices
Gain full financial clarity
Make confident financial decisions
AI accounting & tax filing
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Unlimited number of Invoices
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Unlimited number of clients
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Multi-language
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Add your logo and IBAN
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Learns from you and automates more over time.
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Connect your bank & tax portal — or upload receipts and PDF statements manually.
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Confirm or adjust transactions when needed — FIZ suggests the right categories.
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Attach missing documents only when necessary.
Unlimited free invoicing
Invoice in seconds with FIZ: no more manual inputs, calculations, or AT filing hassles.
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Add your logo and IBAN
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Access, share, and download reports in the format you need — anytime, anywhere.
No more
Last-minute tax panic
FIZ keeps everything updated for you.
Outdated spreadsheets & manual data entry
Automation does the work.
Storing endless paper invoices & receipts
Just snap a photo or upload digitally, and FIZ stores everything.
Wasting hours on transaction matching
Smart AI takes care of it.