Rillet vs Campfire vs QuickBooks Online for B2B SaaS: Which Accounting Software Is Right for Your Stage?

Author: Tim Salikhov, CFA — CEO @ Bridges | Fractional CFO & Accounting for B2B SaaS LinkedIn: https://www.linkedin.com/in/tsalikhov/ Date Published: June 27, 2026 Meta Description: QuickBooks, Rillet, or Campfire — the right accounting software for B2B SaaS depends on ARR, billing complexity, and entity structure. Here is how to decide.

The pressure to upgrade accounting software arrives quickly after a Series A closes. A new board member cites NetSuite. A CFO candidate flags QuickBooks as a liability. A peer company posts about their Rillet migration. Before committing to a $40K platform switch, founders need a clear answer to a simpler question: does the current pain justify the disruption, or is QuickBooks still the right tool for where the business actually is? The answer depends on ARR, billing complexity, and entity structure — not on what the finance software market considers aspirational. I've worked through this decision with founders at every stage, and the wrong call costs months of operational disruption alongside the dollar cost.

Key Takeaways:

• QuickBooks Online is sufficient for most B2B SaaS companies below $10M ARR with straightforward billing — upgrading before you need to creates cost and disruption with no return.
• Rillet and Campfire both raised $100M in Series A and B rounds in 2025 and target $5M–$30M SaaS companies that have outgrown QuickBooks but aren't ready for a NetSuite implementation.
• Rillet's native ASC 606 revenue recognition makes it the stronger choice for companies with complex subscription, usage-based, or multi-element billing arrangements; Campfire's conversational Ember AI interface makes it faster to implement and easier for non-finance teams to use.
• According to the 2026 CFO Tech Guide (survey of 1,364 finance leaders), QuickBooks dominates ERPs below $10M ARR with over 50% market share, and NetSuite takes over at $25M+, with Rillet and Campfire each capturing low-to-mid single-digit share as the first AI-native challengers.
• The most common mistake is upgrading the GL before fixing the underlying process — a cleaner chart of accounts and a solid month-end close discipline will do more for your board reporting than any software switch.

How QuickBooks Online works for B2B SaaS

Best for: Seed to $10M ARR, single entity, standard billing Price: $35–$235/month (Simple Start to Advanced)

QuickBooks Online is a cloud-based accounting platform from Intuit that handles invoicing, bank reconciliation, expense tracking, and basic financial reporting. For most early-stage SaaS companies, it is sufficient. The integrations are broad — Stripe, Ramp, Brex, Rippling, and most of the modern finance stack connect without middleware. The available talent pool of bookkeepers and controllers who know it well is the largest of any GL on the market, which keeps operating costs low.

Key features for SaaS:

• Bank feeds and reconciliation with direct connections to most major banks
• Invoicing and basic accounts receivable management
• Integration with Stripe for revenue and payment syncing
• P&L, balance sheet, and cash flow reporting
• Payroll integration via QuickBooks Payroll or Gusto
• Multi-user access (limited by plan)

Why it made the list: QuickBooks holds over 50% market share among companies below $10M ARR for a reason — it is reliable, widely understood, and supported by a large ecosystem of accountants and integrations. The Maxio 2026 SaaS accounting guide notes QuickBooks is built for small teams who need dependable bookkeeping without ERP-level complexity. Its limitations become operational at a specific threshold: revenue recognition for complex billing arrangements, multi-entity consolidation, and reporting that goes beyond standard templates. Companies that have not yet hit those walls do not have a compelling case to migrate.

How Rillet works

Best for: $5M–$30M ARR, SaaS-native accounting without a NetSuite implementation Price: $15K–$40K/yr (custom quote required, no public pricing)

Rillet is an AI-native ERP built specifically for hypergrowth SaaS companies. The platform was founded by accountants, not engineers who later brought in accounting expertise, and the product reflects that orientation: the general ledger is the core, with native ASC 606 revenue recognition built in rather than bolted on. This matters for SaaS companies with subscription tiers, usage-based components, or multi-element arrangements where revenue must be deferred and recognized on a schedule rather than booked on invoice date.

Rillet raised $100M across Series A and B in 2025, backed by Sequoia, Andreessen Horowitz, and ICONIQ. Adoption by accounting firms including PwC, Deloitte, and Armanino is a credible signal of audit readiness — a bar that newer platforms in this category have not yet met.

Key features:

• Native ASC 606 and IFRS 15 revenue recognition, synced directly from Salesforce or HubSpot
• AI general ledger (Aura AI) that automates journal entries, reconciliations, accruals, and intercompany eliminations
• Native integrations with 10,000+ banks, plus direct connections to Stripe, Ramp, Salesforce, and other core tools — no middleware
• Multi-entity consolidation with real-time currency revaluations
• Implementation led by CPAs, typically 4–6 weeks
• Detailed reporting with greater customizability than Campfire

Why it made the list: For SaaS companies that have outgrown QuickBooks and need proper revenue recognition without a six-month NetSuite implementation, Rillet is the most purpose-built option currently available. Founders who migrate to NetSuite at $8M ARR frequently spend $150K or more on buildout for capabilities that will not be fully utilized for two or three years. Rillet delivers the critical accounting infrastructure — ASC 606, multi-entity, CPA-led implementation — at a fraction of that cost and timeline. Its limits are clear: no inventory or supply chain support, and no deep configurability for large multi-geography enterprises. Pricing requires a direct conversation with sales.

How Campfire works

Best for: Early-to-mid stage SaaS teams wanting a modern GL without legacy ERP overhead Price: $10K–$30K/yr (custom quote required; third parties note lower upfront costs than NetSuite)

Campfire was founded in 2023, came out of Y Combinator's 2023 class, and raised $100M in 2025 — the same amount as Rillet, positioning both companies as the primary contenders in the AI-native ERP category for startups. Where Rillet was built by experienced accountants optimizing for control, Campfire was built to democratize access to financial data across the whole company.

The signature feature is Ember AI, a conversational interface embedded throughout the platform. Non-finance team members — sales, operations, leadership — can query financial data directly without waiting for a finance team to build a report. This cross-functional accessibility is the clearest product differentiation from Rillet. Implementation is also lighter, measurable in days in straightforward deployments, because Campfire requires less configuration upfront.

Key features:

• Ember AI: natural language queries across all financial data, accessible to non-finance team members
• AI-powered GL with automated reconciliations and journal entries
• Native integrations with Salesforce, Stripe, Ramp, Brex, Rippling, and HubSpot
• Revenue recognition automation covering deferred revenue, unbilled AR, and journal entry preparation
• Modern UX that surfaces key reminders (overdue AP/AR, uncategorized transactions) without drilling down
• Fast implementation; lower configuration overhead than Rillet or NetSuite

Why it made the list: Campfire's central proposition is that the bottleneck in early-stage finance is not accounting speed but information access — and that finance data should be queryable by the whole company, not just the finance team. Ember AI is a direct answer to that problem. Where Campfire has limits: revenue recognition capabilities are less deep than Rillet's for complex billing arrangements, the platform has less of a track record at IPO-stage companies, and the conversational interface adds configuration overhead for teams that prefer structured reporting workflows.

Rillet vs Campfire vs QuickBooks: side by side

When none of these is the right answer and you actually need NetSuite

The 2026 CFO Tech Guide data from 1,364 finance leaders is clear: NetSuite takes over at $25M ARR with 41% market share, climbing to 58% at $50M–$100M. There are legitimate reasons for that trajectory.

NetSuite — not Rillet or Campfire — is the right answer when:

• The company operates more than two legal entities requiring consolidated reporting on a shared close calendar
• The business has inventory, manufacturing, or supply chain requirements
• There is a clear path to IPO within 24 months and auditors are already asking about controls infrastructure
• The billing model spans multiple geographies with VAT/GST complexity at volume
• Investors or the board have explicitly named NetSuite as a requirement

NetSuite's mid-market cost ranges from $30K–$300K/yr per the CFO Tech Guide, and implementation adds a separate and often underestimated cost. Total cost of ownership — including system integrators, module buildouts, and ongoing admin — frequently exceeds what founders project when they evaluate only the license fee. The finance infrastructure decision and the finance team hiring decision are closely linked at this stage; for context on how they interact, see our breakdown of the first finance hire for B2B SaaS companies. Bridges works through both decisions with founders as a single exercise.

Common mistakes founders make when deciding to upgrade their accounting software

The accounting software decision goes wrong in predictable ways across early-stage SaaS companies.

Upgrading because of investor pressure, not operational pain. Investors want clean financials and board-ready reporting. Those are real needs — but they do not automatically require a platform migration. A well-structured QuickBooks instance with solid processes can produce investor-grade reporting. The upgrade question is whether the current platform is blocking that outcome, or whether the underlying process is what needs fixing. Process comes before software.

Choosing the platform for where the company wants to be, not where it is. NetSuite is a serious infrastructure investment. Committing to it at $7M ARR because the plan calls for $50M in three years means paying for capabilities that will sit unused — and managing a system that requires dedicated admin time the team does not yet have. The right frame is current complexity plus one stage ahead, not the eventual end state.

Underestimating migration cost and disruption. A GL migration touches the chart of accounts, historical data, integrations, reporting templates, close processes, and institutional knowledge. Migrations that vendors quote at six weeks routinely extend to six months when they encounter real data. Running old and new systems in parallel through a clean cutover date is the lower-risk path.

Ignoring the talent question. The best software is only as good as the team running it. QuickBooks has the largest available pool of experienced bookkeepers and controllers. Rillet and Campfire have smaller, newer talent ecosystems. A fractional CFO or controller who has not worked in Rillet before will need time to reach full operating speed — and that time has a cost. Bridges evaluates tool selection and team capability together, because the right software for any company is the one the team can operate well. For a fuller view of how these decisions connect, see our guide on whether your company needs a CFO at $5M ARR.

Treating the GL as the whole finance function. The ERP is a system of record. It is not an FP&A layer, a revenue forecasting tool, or a board reporting engine. Companies that get the most out of any GL — QuickBooks, Rillet, or NetSuite — build a finance function around the system, not just within it.

If you are navigating a fundraise, a new board, or a first serious finance hire and need to get the financial infrastructure right before committing to a platform, schedule a conversation before you sign a contract. Bridges works with vertical SaaS founders at this inflection point — evaluating tool selection, finance team structure, and reporting infrastructure as a single decision.

FAQ

What accounting software do most B2B SaaS startups use? According to the 2026 CFO Tech Guide (1,364 finance leaders), QuickBooks dominates below $10M ARR with 50%+ market share. NetSuite takes over at $25M–$50M with 41% share, growing to 58% at $50M–$100M. Rillet and Campfire hold low-to-mid single-digit share as the emerging AI-native challengers for companies in between. Bridges helps founders choose the right system for their current stage.

What is the difference between Rillet and Campfire? Both are AI-native ERPs that raised $100M in 2025 and target SaaS startups that have outgrown QuickBooks. Rillet was built by accountants and emphasizes deep ASC 606 revenue recognition, multi-entity support, and audit readiness. Campfire prioritizes fast implementation and cross-functional accessibility through its Ember AI conversational interface. Rillet suits companies with complex billing; Campfire suits teams that need financial data accessible company-wide.

Should I upgrade from QuickBooks before my Series A? For most companies, no. Series A investors care about accurate, consistent financials — not the platform those financials live in. QuickBooks produces clean investor reporting when the underlying processes are sound. The upgrade trigger is operational: multi-entity complexity, complex revenue recognition requirements, or a finance team spending significant time working around platform limitations rather than within them.

Do I need NetSuite at $10M ARR? For most B2B SaaS companies at $10M ARR, NetSuite is not the right fit. The CFO Tech Guide data shows QuickBooks still holds 44% share at $10M–$25M ARR, with AI-native alternatives like Rillet and Campfire purpose-built for that stage. NetSuite becomes the appropriate choice when the company has multiple entities, global operations, inventory requirements, or is on an IPO timeline with auditors expecting enterprise-grade controls infrastructure. At $10M ARR, the implementation cost and ongoing admin overhead frequently outweigh the operational benefit.