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Personal Finance · head to head

Firefly III vs Sage 50

Firefly III logo

Firefly III

Personal Finance

Free, open source, self-hosted personal finance manager with double-entry style accounting

From
Free
Rated
-
Full reviewWebsite
Sage 50 logo

Sage 50

Accounting

Windows desktop accounting with the ledger held in a local data file rather than in a browser

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Only Firefly III has a free tier, so it costs nothing to try first.
  • Each has a real cost: Firefly III there is no official managed hosting, so a non-technical user has no easy on-ramp the way Actual Budget offers with its paid hosted sync.; Sage 50 it is a Windows desktop application, so Mac users need a virtual machine or a hosted desktop, and every added remote worker becomes a hosting bill rather than another browser tab.
  • They diverge on capability: Firefly III covers Double-entry style ledger, Sage 50 covers Local company data file.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Firefly III and Sage 50 actually diverge.

Attributes where Firefly III and Sage 50 differ
AttributeFirefly IIISage 50
Starting priceFree$29/month
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsWeb, Linux, DockerWindows
CategoryPersonal FinanceAccounting
FoundedUnknown1981

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Firefly III

  • Double-entry style ledger
  • Multi-currency accounts
  • Bill and subscription tracking
  • Rule engine
  • Reports and charts
  • API access

Only in Sage 50

  • Local company data file
  • Nominal, sales and purchase ledgers
  • Bank reconciliation
  • VAT and sales tax handling
  • Stock control
  • Job and project costing
  • Multi user access
  • Microsoft 365 integration

What people use each for

The jobs each tool is most often brought in to do.

Firefly III

  • A self-hoster already running a home server or NAS who wants their financial ledger on the same infrastructurenot Sage 50
  • Someone who wants double-entry style accuracy rather than simple envelope budgetingnot Sage 50
  • A privacy-focused user who refuses to put financial data on any third-party server, hosted or otherwisenot Sage 50
  • A developer who wants API access to build custom bank import scripts for accounts with no standard connectornot Sage 50

Sage 50

  • An established small business that wants its accounting data physically in the building rather than on a vendor's serversnot Firefly III
  • A construction or trade business needing job costing and stock depth that the entry level cloud products do not matchnot Firefly III
  • A company with unreliable internet where a browser only ledger would stop work whenever the line dropsnot Firefly III
  • A long standing user with a decade of transaction history in the file for whom migrating to anything else is the expensive optionnot Firefly III

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Firefly III

  • There is no official managed hosting, so a non-technical user has no easy on-ramp the way Actual Budget offers with its paid hosted sync.
  • The double-entry-influenced model is less intuitive for newcomers than simple envelope budgeting, and the learning curve is real.
  • Automatic bank sync depends on the community-run importer and third-party connectors, and coverage and reliability vary a lot by bank and country.
  • Mobile access is via a web interface rather than a polished native app, which is a step behind Actual Budget or Lunch Money on phones.
  • Because there is no company behind it, security patching and feature development depend entirely on volunteer maintainer time.

Sage 50

  • It is a Windows desktop application, so Mac users need a virtual machine or a hosted desktop, and every added remote worker becomes a hosting bill rather than another browser tab.
  • Multi user working shares a data file over the network, so all users effectively need to be on the same local network or on the same hosted server, and file corruption in a shared file environment is a recovery from backup rather than a support ticket.
  • The United States and United Kingdom editions are separate products with different tax engines, so a business trading in both markets cannot run one Sage 50 across them, and experience or add ons from one edition do not transfer to the other.
  • Additional users are licensed individually at full price, which means a part time bookkeeper, an approver who signs off purchase invoices and a manager who only ever reads reports all cost the same as the full time finance person.
  • Sage's development effort has moved to its cloud accounting products, so the eventual move off Sage 50 is a re-implementation with historical data conversion and a fresh chart of accounts rather than an in place upgrade, and that project only gets larger the longer the file grows.

Pricing, plan by plan

Firefly III

Free
  • Firefly IIIFree
    • Full functionality, self-hosted
    • No usage limits
    • Community support, donations accepted

Sage 50

$29/month
  • Pro Accounting$50/month
    • Core accounting
    • 1 user
    • Basic reports
  • Premium Accounting$85/month
    • 5 users
    • Job costing
    • Inventory

Which should you pick?

Choose Firefly III if

  • You need double-entry style ledger.
  • You want to start without paying.
  • You work on Web, Linux, Docker.
  • You also want multi-currency accounts.
Firefly III review

Choose Sage 50 if

  • You need local company data file.
  • You work on Windows.
  • You also want nominal, sales and purchase ledgers.
Sage 50 review

Questions people ask

Is Firefly III or Sage 50 better?
Neither clearly leads. Firefly III starts at Free and Sage 50 at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Firefly III or Sage 50?
Firefly III has a free tier; the other does not. Paid plans start at Free for Firefly III and $29/month for Sage 50.
Does Firefly III or Sage 50 run on more platforms?
Firefly III runs on Web, Linux, Docker. Sage 50 runs on Windows.
Can I use Firefly III for free?
Yes. Firefly III has a free tier, so you can try it without paying. Sage 50 starts at $29/month.
What is Firefly III best used for?
Firefly III is most often used for a self-hoster already running a home server or nas who wants their financial ledger on the same infrastructure, someone who wants double-entry style accuracy rather than simple envelope budgeting, a privacy-focused user who refuses to put financial data on any third-party server, hosted or otherwise, a developer who wants api access to build custom bank import scripts for accounts with no standard connector. Of those, a self-hoster already running a home server or nas who wants their financial ledger on the same infrastructure and someone who wants double-entry style accuracy rather than simple envelope budgeting are not what Sage 50 is typically brought in for.
What can Firefly III do that Sage 50 cannot?
Firefly III covers Double-entry style ledger, Multi-currency accounts, Bill and subscription tracking, Rule engine. Sage 50 covers Local company data file, Nominal, sales and purchase ledgers, Bank reconciliation, VAT and sales tax handling.

Answered from the vendors’ own pages

Firefly III: Can I pay someone to host Firefly III for me?

Not through the core project; some third-party providers sell Firefly III hosting independently, but there is no official managed service.

Sage 50: Is Sage 50 cloud software?

No. The application runs on Windows and the ledger is a local file. The Sage 50cloud tiers add Microsoft 365 integration and a sync service for remote access, but the accounting itself is still desktop software.

Firefly III: Does it support multiple currencies?

Yes, natively, including accounts and transactions in different currencies.

Sage 50: Can my accountant work in it?

Yes, and many accountants in the United Kingdom and the United States know it well. Practically they will either take a backup of the company file, or connect through the remote data access service, or work on a hosted copy. Agree which of those before you start.

Firefly III: Is it really free with no paid tier?

Yes, the software is free and open source under the AGPL; the project accepts donations but sells nothing.

Sage 50: Does it still require an annual subscription?

Sage moved Sage 50 to subscription licensing, so continued access and tax table updates depend on an active subscription. Confirm what happens to your ability to open historical data if you stop paying.

Sage 50: Is the United Kingdom version the same product as the United States version?

No. They share a name and a heritage but they are different codebases with different tax handling. Buy the edition for the country where you file.

Sage 50: What about payroll?

Payroll is a separate Sage product with its own subscription and per employee cost. Budget for it separately rather than assuming the accounting subscription covers it.

Sage 50: How hard is it to move to a cloud system later?

Expect to convert opening balances and a limited window of transaction history rather than the full file, and to redo the chart of accounts, the customer and supplier records and any custom reports. Most businesses do it at a year end for that reason.

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