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Firefly III vs GOAT.tax

A side-by-side editorial comparison of Firefly III and GOAT.tax — release velocity, themes, recent moves, and the top alternatives to consider.

Firefly III vs GOAT.tax: at a glance

FeatureFirefly IIIGOAT.tax
SectorFinanceFinance
Velocity score5.05.0
Sparks · 30d00
Top themespersonal-finance, self-hosted, development-builds, boilerplate-bodiestax-compliance, rd-credits, state-coverage, auditability
Last editorial update23h ago21h ago
WebsiteVisit →Visit →

What is Firefly III?

Firefly III publishes a nightly develop build whose notes never say what changed

Firefly III is self-hosted personal finance software, and this feed carries only its development releases — one or more per day, tagged by date, each body an identical 1,501-character block of warnings, download links, newsletter signup and donation appeals. The text is byte-for-byte the same release to release, so the feed records that a build exists and nothing about what is in it.

Read the full Firefly III trajectory →

What is GOAT.tax?

State credit math keeps deepening while the study tables get easier to work in.

GOAT.tax runs R&D tax credit studies end to end, from wage and expense collection through business component allocation to a filed deliverable. This release tightens three state rules at once — Colorado now requires three years in the same Enterprise Zone, Indiana Research Activities fields get defaults so deliverables are never generated incomplete, and Minnesota picks up startup treatment that derives the applicable historical years and Fixed Base Percentage method dynamically. On the workspace side, R&D allocation percentages become directly editable in BC Allocation for single- and multi-state records, and the All Studies page and BC Allocation table are rebuilt on the newer design.

Read the full GOAT.tax trajectory →

Firefly III vs GOAT.tax: editorial side-by-side

F5.0

Firefly III publishes a nightly develop build whose notes never say what changed

◆ Current state

Firefly III is self-hosted personal finance software, and this feed carries only its development releases — one or more per day, tagged by date, each body an identical 1,501-character block of warnings, download links, newsletter signup and donation appeals. The text is byte-for-byte the same release to release, so the feed records that a build exists and nothing about what is in it.

◆ Where it's heading

The cadence itself is the only signal: multiple develop builds most days, sometimes three in one, which indicates active daily work on the main branch. Direction cannot be read from these notes at all. Anything substantive about where Firefly III is heading would have to come from its stable releases or its commit history, neither of which appears here.

◆ Prediction

Expect the develop stream to continue at the same rate with the same boilerplate. The next informative entry will be a stable release, which is the only point at which this project writes real notes.

G
GOAT.tax
FINANCE
5.0

State credit math keeps deepening while the study tables get easier to work in.

◆ Current state

GOAT.tax runs R&D tax credit studies end to end, from wage and expense collection through business component allocation to a filed deliverable. This release tightens three state rules at once — Colorado now requires three years in the same Enterprise Zone, Indiana Research Activities fields get defaults so deliverables are never generated incomplete, and Minnesota picks up startup treatment that derives the applicable historical years and Fixed Base Percentage method dynamically. On the workspace side, R&D allocation percentages become directly editable in BC Allocation for single- and multi-state records, and the All Studies page and BC Allocation table are rebuilt on the newer design.

◆ Where it's heading

The state coverage thread has shifted from adding jurisdictions to encoding their harder eligibility and computation rules — Enterprise Zone tenure, startup Fixed Base Percentage methodology, and visible reasons when a state credit is ruled ineligible. That last one, plus the new Fixed Base Percentage details view and override, points at the same goal from a different angle: making the calculation auditable by the person running the study rather than trusting it. Fee handling entered the product this window too, with an optional not-to-exceed percentage and cap threaded through the fee structure, credit and deliverable pages.

◆ Prediction

Fee logic just appeared across three pages at once, so the next step is likely the rest of the billing path — applying the not-to-exceed cap to invoicing or partner-facing fee reporting. The notes give no schedule.

Alternatives to Firefly III and GOAT.tax

Other Finance products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Firefly III or GOAT.tax.

See all Firefly III alternatives → · See all GOAT.tax alternatives →

Recent activity from Firefly III and GOAT.tax

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agoFirefly IIIDevelopment release for 2026-09-01
  2. 1d agoGOAT.taxMinnesota startup credit math and editable R&D allocation percentages
  3. 2d agoFirefly IIIDevelopment release for 2026-08-31
  4. 2d agoFirefly IIIDevelopment release for 2026-08-31
  5. 2d agoFirefly IIIDevelopment release for 2026-08-31
  6. 3d agoFirefly IIIDevelopment release for 2026-08-30
  7. 5d agoFirefly IIIDevelopment release for 2026-08-28
  8. 12d agoGOAT.taxMulti-company groundwork and California prior-credit questions
  9. 21d agoGOAT.taxSaved table views, supporting docs, and state credit fixes
  10. 1mo agoGOAT.taxPennsylvania state credit support added to deliverables
  11. 1mo agoGOAT.taxPrior-year R&D comparison columns land in BC Allocation
  12. 1mo agoGOAT.taxSME invitation flow and Business Component PDF export

Frequently asked questions

What is the difference between Firefly III and GOAT.tax?

They serve adjacent needs but don't currently overlap on shipped themes. Firefly III and GOAT.tax are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Firefly III better than GOAT.tax?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Firefly III and GOAT.tax are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Finance products to evaluate alongside.

What are the best alternatives to Firefly III?

Top Firefly III alternatives in Finance are ranked by recent ship velocity. Browse the "Firefly III alternatives" section above for the current picks, or visit /alternatives/firefly-iii for the full list with editorial commentary on each.

What are the best alternatives to GOAT.tax?

Top GOAT.tax alternatives in Finance are ranked by recent ship velocity. Browse the "GOAT.tax alternatives" section above for the current picks, or visit /alternatives/goat-tax for the full list with editorial commentary on each.