Firefly III vs Actual Budget

Firefly III — strengths

• Double-entry model ensures every pound/dollar has a source and destination — excellent for catching errors and understanding money flow
• Powerful rules engine auto-categorises transactions on import with complex matching conditions
• Extensive reporting: spending by category, budget adherence over time, cash-flow analysis, net worth timeline
• Supports multiple currencies and accounts in a single instance
• Mature project (9+ years) with stable API, wide import format support, and a large community

Firefly III — weaknesses

• No official mobile app
• Double-entry model has a learning curve
• UI is dated compared to Actual

Actual Budget — strengths

• YNAB-style envelope budgeting model that many users find more actionable than report-based budgeting
• Modern, fast, polished UI — the best UX in the self-hosted personal finance category
• Offline-first with sync: data lives locally in the browser, synced to the server on demand
• MIT licensed — no surprises for building apps on top of it
• Active development with regular feature additions and a strong community of YNAB migrants

Actual Budget — weaknesses

• No double-entry bookkeeping
• Weaker rules/auto-categorisation engine
• Investment and asset tracking less comprehensive

When Firefly III fits

• Accountant or finance-focused user who wants to track every account — current, savings, mortgage, investment — as a proper double-entry ledger: Firefly III's account model handles this correctly; Actual's simplified model does not have equivalent depth.
• User who imports statements from multiple banks and credit cards and wants rules that auto-split restaurant charges into food vs. entertainment: Firefly III's rules engine with split transactions and regex matching handles this without manual categorisation.
• Business owner tracking personal and business accounts separately in one system: Firefly III's multi-account, multi-currency model with clear separation between account types maps well to this.

When Actual Budget fits

• YNAB refugee who wants the same envelope-budgeting workflow but self-hosted: Actual Budget uses an identical model (envelopes, forward-funded months, "rollover" amounts) and the data model is explicitly inspired by YNAB 4.
• User who primarily budgets on a phone and wants fast, offline-capable access: Actual's sync server means the web app works offline and syncs when reconnected, with no PHP stack latency.
• Couple sharing a budget: Actual's sync model means both partners have the same budget state across their devices with no manual reconciliation needed.

Firefly III gotchas

• Double-entry can be confusing for users who just want income vs. expenses — the concept of every transaction requiring a source and destination account trips up new users
• No official mobile app — the best community apps are Abacus and Waterfly, which are good but not maintained by the Firefly III project
• Bank import via Nordigen/Plaid adds significant setup complexity and depends on third-party services that may change or fail
• UI is functional but dated compared to Actual Budget's modern interface

Actual Budget gotchas

• No double-entry — if you want proper bookkeeping rather than budgeting, Actual is not the right tool
• Rules engine is limited compared to Firefly III — auto-categorisation is available but less powerful
• Bank sync (GoCardless) requires a plugin and has regional limitations — UK/Europe coverage is better than US
• Investment account tracking is basic; no equivalent of Firefly III's deep asset tracking and piggy-bank goal system

Choose Firefly III when

Pick Firefly III if you want a proper double-entry ledger, a powerful auto-categorisation rules engine, multi-currency support, or deep historical reporting. It is also the better pick if you track business and personal finances in the same system.

Choose Actual Budget when

Pick Actual Budget if you want an envelope-based zero-sum budgeting workflow (YNAB-style), a polished modern UI, fast offline sync across devices, and MIT licensing. It is the better pick for users who want actionable budgeting rather than bookkeeping.

Migration

Both support CSV import, so migrating historical transactions is possible but requires cleanup work — account names, category structures, and starting balances must be set up manually in the target. Firefly III's rules-engine output can be exported as categorised CSV; Actual can import CSV. Expect to spend an afternoon rebuilding account structure and verifying opening balances rather than expecting a clean automated transfer. Run both in parallel for a month before retiring the old one to validate that reports match.

Frequently asked questions

Is Actual Budget a YNAB replacement?

For the budgeting methodology, yes. Actual uses the same envelope / zero-based model as YNAB 4. The UI is similar and the core workflow (assigning every dollar a job, rolling with punches) is nearly identical. Bank sync coverage is more limited than YNAB's, especially outside the UK.

Does Firefly III have a mobile app?

Not officially. The best community apps are Waterfly (iOS/Android) and Abacus (Android). They are functional but maintained independently of the main project.

Can I import from my bank automatically?

Both support automation to varying degrees. Firefly III integrates with Nordigen/GoCardless (European open banking) for automatic import. Actual Budget has a GoCardless community plugin. Both support manual CSV/OFX import from any bank that provides downloads.

Which is better for multiple currencies?

Firefly III — it has first-class multi-currency support with exchange rate handling. Actual Budget's multi-currency support is more basic.

Is Actual Budget fully open-source?

Yes — MIT licensed, with the full server and client code on GitHub. The project was open-sourced after the commercial YNAB alternative it was originally sold as was discontinued.

Can I run both on the same server?

Yes — they do not conflict. Some users run both: Firefly III for the bookkeeping and net-worth tracking, Actual Budget as the day-to-day budgeting tool for one or both partners. They do not share data.