OCTIS vs Moloni vs InvoiceXpress: certified invoicing software in Portugal
Both are certified by the Portuguese Tax Authority (AT). They price in different ways, so the cheaper one depends on how many documents you issue.
Last checked · 3 sources
Otty's short answer
Moloni suits a business that issues many documents or needs stock, POS or purchases, because its plans cap users and features, not document volume. InvoiceXpress suits a freelancer or small service business with few invoices, because plans are priced by documents per month and all include unlimited users. Both exclude VAT.
Side by side
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| What matters | OCTISHong Kong company + OCTIS global plan | Moloni | InvoiceXpress |
|---|---|---|---|
| Entry price (annual billing) | 10–30% below your current bill | From €3.50 per month (Molonion) | €3 per month (3 documents) |
| Typical small-business plan | Prices not published | €6.49 per month (Base) | €7 per month (10 documents) |
| Mid plan with API and stock | Prices not published | €10.90 per month (Flex) | €20 per month (100 documents) |
| How plans are priced | 10–30% below your current bill | By features and users | By documents per month |
| Users included | Your whole team | 1 to 5, extra €1 per month | Unlimited on all plans |
| Monthly billing price (mid plan) | Lowest Price Guarantee and 30-day money-back, terms apply | €20.99 (Flex) | €24 (100 documents) |
| AT certification | Not needed for the Hong Kong company; local rules apply if you trade there | Yes, no. 2860 | Yes, no. 192 |
| SAF-T and ATCUD | Not needed for the Hong Kong company; local rules apply if you trade there | Yes | Yes |
| Stock, purchases, POS | Not an OCTIS product | From Flex | Not listed on pricing page |
| Free plan | 30-day money-back guarantee, terms apply | No free plan, 30-day trial | No free plan, 30-day trial |
If you have staff, premises or local sales in this country, its own registration and tax rules still apply. OCTIS can help you arrange them.
Data sources & disclaimer: Comparison data was compiled from publicly available sources — including the competitors' own published pricing and feature pages — captured on 9 November 2026. Figures reflect the typical or advertised pricing at that time and may have changed since; plans, inclusions and prices vary by provider, region and promotion. OCTIS is independent and not affiliated with the named companies; all trademarks belong to their respective owners. This comparison is provided in good faith for general information only and is not professional, legal or financial advice — please verify current details with each provider before deciding.
Which one fits you
OCTIS · Hong Kong company + OCTIS global plan
Choose OCTIS if you want invoicing handled with accounts, CRM and workflow automation in one workspace.
Moloni
Choose Moloni if you issue many documents, want stock, purchases or a point of sale, or want plans that do not rise with volume.
InvoiceXpress
Choose InvoiceXpress if you are a freelancer or small service business with few invoices and want unlimited users at a low entry price.
What the table does not show
How Moloni charges
Moloni sells four plans. Molonion starts from €3.50 per month for one user. Base is €6.49, Flex is €10.90 and Pro is €15.90 per month when billed yearly, excluding VAT. Base and Flex allow 2 users and Pro allows 5. Flex adds 47 currencies, an API, e-commerce links, Multibanco references, stock and a point of sale. Pro adds warehouse management. The page shows document types, not a cap on documents.
How InvoiceXpress charges
InvoiceXpress prices by the number of documents you issue each month. Billed yearly, 10 documents cost €7, 100 cost €20, 500 cost €24 and 1,000 cost €36 per month. Billed monthly, the same tiers cost €9, €24, €29 and €43. All plans include unlimited users, SAF-T export, ATCUD and QR code invoices. There is no permanent free plan, only a 30-day trial, and AT communication cannot be set up during the trial.
What the AT rules decide
In Portugal you must issue invoices from software certified by the Tax Authority, and the software must produce the ATCUD code and the SAF-T file. Both products list these. Your choice then comes down to volume, users and extras. If you send an accountant a SAF-T file each month, check that the plan you pick supports scheduled sending. InvoiceXpress lists it on its higher plan cards.
Where OCTIS fits
OCTIS does not keep books or file tax in Portugal. If your Malaysian or Hong Kong company sells into Portugal through a Portuguese entity, the invoicing tool here is the local choice. The home company's own books, tax filing and audit coordination still need doing, and OCTIS handles those. Switching can take 10–30% off your current bill.
Frequently asked questions
Which is cheaper, Moloni or InvoiceXpress?
For a handful of invoices a month, InvoiceXpress is cheaper, from €3 per month for 3 documents. Once you issue about 100 documents a month, InvoiceXpress is €20 per month against Moloni's flat €6.49 to €10.90 plans. Check your own document count first.
Are both programs certified by the Tax Authority?
Yes. Moloni's footer shows AT certificate number 2860. InvoiceXpress shows number 192. You can confirm any certificate number on the Portal das Finanças.
Do the prices include VAT?
No. Both providers show prices without VAT, and Portuguese VAT at the legal rate is added at checkout. A business that can recover VAT can usually deduct it.
Is there a free plan?
InvoiceXpress has a 30-day free trial and no permanent free plan. Moloni lists no free plan either, only a 30-day trial. Moloni Molonion starts from €3.50 per month.
Can I send my accountant the SAF-T file?
Both list SAF-T. Moloni lists SAF-T import on Molonion and SAF-T export on Base, Flex and Pro. InvoiceXpress lists SAF-T export on every plan and scheduled sending to an accountant on its higher plan cards.
Sources
Checked on the date above. Links open the provider's or regulator's own page.