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Sage One

by Sage One

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Sage One's own site

What Sage One is

Sage One is online invoicing software for businesses, available through the web and an API from any device. It creates quotes, invoices, credit notes, debit notes, and receipts, and supports electronic invoices with digital signatures. For Portuguese requirements, it supports invoice printing with QR Code and ATCUD and automatic SAF-T communication to the Tax Authority. Users can track expenses, follow customer accounts, and provide accountant access. The public API connects other applications, while a Google Drive integration stores and accesses documents. A 30-day trial includes every feature, including invoice issuance; Sage says a SAF-T file can be exported if a subscription is not started. The Básica plan costs $130 a month, billed por mês + IVA, with five sales documents monthly. Standard costs $735 a month, billed por mês + IVA, includes a promotional 30% discount, and allows unlimited sales documents. Sage advertises free, unlimited support.

Who it suits

Sage One suits entrepreneurs and businesses from start-ups through medium and large companies needing online invoicing and Portuguese tax features. It also fits organizations requiring accountant access or API connections.

What it does well

  • Web access from any device
  • Portuguese QR Code and ATCUD support
  • Automatic SAF-T communication
  • 30-day trial with all features
  • Free, unlimited support

What to know first

  • No free plan
  • Básica limited to five sales documents monthly
  • Mobile access is web only
  • Inventory tracking unavailable

Plans

PlanBilled and limitsPrice
Sage One Básicapor mês + IVA · 5 documentos de venda/mês · inclui API para ligação a loja online$130 a month
Sage One Standardpor mês + IVA; preço promocional com 30% de desconto · Documentos de venda ilimitados · inclui tudo da versão Básica$735 a month

As sage.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

Sage One combines invoicing, expense tracking, customer accounts, and Portuguese compliance features in a web service. The trial includes full functionality, while ongoing plans differ mainly in document limits and price.

Facts from Sage One's own pages

Accountant access
Yes · sage.com, 20 Sept 2026
Anywhere access
The product is web-compatible and can be accessed from any device. · sage.com, 11 Oct 2026
Electronic invoicing
The product supports electronic invoicing with digital signature. · sage.com, 11 Oct 2026
Expenses and customers
It lets users track expenses and follow customer accounts. · sage.com, 11 Oct 2026
Free plan
No · sage.com, 20 Sept 2026
Headquarters
Porto, Portugal · sage.com, 28 Sept 2026
Integrations
Its public API supports integrations with other applications, and Sage describes a Google Drive integration for storing and accessing documents. · sage.com, 11 Oct 2026
Intended customers
Sage says it serves entrepreneurs and businesses ranging from start-ups to medium and large companies. · sage.com, 11 Oct 2026
Inventory tracking
No · sage.com, 20 Sept 2026
Invoice creation
Yes · sage.com, 20 Sept 2026
Mobile platforms
web only · sage.com, 20 Sept 2026
Plan limit
The Básica plan includes five sales documents per month, while Standard includes unlimited sales documents. · sage.com, 11 Oct 2026
Portuguese requirements
The product supports invoice printing with QR Code and ATCUD and automatic SAF-T communication to the Tax Authority. · sage.com, 11 Oct 2026
Purpose
Sage One is online invoicing software for businesses. · sage.com, 11 Oct 2026
Sales documents
It supports sales documents including quotes, invoices, credit notes, debit notes and receipts. · sage.com, 11 Oct 2026
Security and compliance
Sage says its cloud SaaS security and operations are ISO 27001 certified and that traffic to and from Sage applications is encrypted using TLS. · sage.com, 11 Oct 2026
Support
The Sage One page advertises free, unlimited support. · sage.com, 11 Oct 2026
Trial
The 30-day free trial includes all features, including issuing invoices. · sage.com, 11 Oct 2026
Trial data export
If a user does not subscribe after the trial, Sage says they can export a SAF-T file to keep their information. · sage.com, 11 Oct 2026

Where Sage One stands on Freedom251

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