Which AI accounting business model wins: software or firms?

Why are AI accounting startups competing with accounting firms?

AI accounting startups are beginning to sell the finished accounting work that traditional firms charge for, creating a direct fight over who gets the customer's money.

Until recently, the separation was fairly simple. QuickBooks and Sage sold accounting software, while accounting firms charged businesses to maintain their books, prepare taxes and produce financial reports. Companies often paid for both.

AI is changing that arrangement. In February 2026, Pilot introduced an AI Accountant that it says can handle bookkeeping from onboarding to monthly close without human intervention. Rillet, meanwhile, is building an AI-native general ledger that automates work inside finance departments. Basis and Truewind are developing AI agents for professional accounting firms.

These companies approach the same opportunity from different directions. Software providers want businesses and accountants to pay for automation tools. AI-enabled accounting firms want businesses to pay them directly for completed accounting work, even when software performs most of it.

The distinction is important because the two models earn money differently. A software company typically earns recurring fees for access to technology. An accounting services provider earns fees for delivering bookkeeping, tax preparation, reporting or advisory work, while carrying responsibility for the result.

Consider a software company charging $100 per month and an accounting firm charging $1,000. The firm earns ten times as much revenue per customer, but it must also deliver the service, handle exceptions and provide professional oversight.

The better business model is the one that can grow profits without increasing its accounting workforce at roughly the same rate as revenue. Operating margins, revenue per employee, customer retention and the incremental cost of serving another customer are more useful measures than revenue growth alone.

This is where the competition gets interesting. Software vendors can spread development costs across thousands of customers. Accounting firms can capture more of each customer's spending, but they need to find a way to stop human delivery costs from growing alongside it.

Is accounting software already more profitable than accounting firms?

Established accounting software companies already demonstrate stronger operating economics than traditional accounting firms. AI-native startups have yet to prove they can match those margins.

Intuit reported $21.45 billion in fiscal 2026 revenue, up from $18.83 billion the previous year, and approximately $5.9 billion in GAAP operating income. Its operating margin was around 27.6%. The company also sells consumer tax and personal-finance products, so that margin cannot be attributed entirely to accounting software.

Sage provides another comparison. In fiscal 2025, the company reported £2.51 billion in revenue and a 21.1% statutory operating margin, up from 19.4% the previous year. Its underlying operating margin reached 23.9%.

Accounting services have a different financial profile. CBIZ generated $2.76 billion in consolidated revenue in 2025, including $2.30 billion from accounting, tax, advisory and consulting. Its financial services division generated approximately $336.6 million in practice-level income, implying a 14.6% margin before corporate overhead.

These figures use different accounting definitions, and CBIZ's services extend well beyond bookkeeping. Its practice-level margin is not equivalent to Intuit's or Sage's statutory operating margin. Still, established software businesses have demonstrated operating margins above 20%, while professional services groups must continually pay for the people delivering their work.

Company	Period	Revenue	Profitability indicator
Intuit	FY2026	$21.45B	27.6% GAAP operating margin
Sage	FY2025	£2.51B	21.1% statutory operating margin
Sage	FY2024	£2.33B	19.4% statutory operating margin
CBIZ	FY2025	$2.76B	Consolidated services group
CBIZ Financial Services	FY2025	$2.30B	14.6% practice-level margin before corporate overhead
Rillet	Private	Undisclosed	Undisclosed
Pilot	Private	Undisclosed	Undisclosed
Truewind	Private	Undisclosed	Undisclosed

The comparison favors software, but there is a catch. Intuit and Sage have decades of accumulated distribution, integrations and customer relationships. A young AI accounting software company may have much weaker margins while it spends on model inference, development, onboarding and sales.

What the public numbers establish is the profitability that mature financial software can achieve. They don't establish that every AI accounting startup will achieve it. For services providers, the challenge is greater: they must use AI to change their labor economics, rather than simply adding another technology expense.

If you want more recent data on this point, please see our latest AI accounting market report.

Can AI accounting software replace the work that accounting firms sell?

AI accounting software can now automate substantial parts of bookkeeping. Replacing an entire accounting engagement remains much harder than automating individual tasks.

Pilot's February 2026 announcement is one of the clearest examples of how far the technology has moved. The company presented an autonomous bookkeeping system covering onboarding, transaction categorization, reconciliation and monthly close. That goes considerably further than software that merely suggests accounting entries for a human to approve.

Other companies are automating different parts of the process. Numeric focuses on financial close management, reconciliations and reporting. Rillet integrates accounting records with systems such as Salesforce and Brex, allowing finance teams to automate workflows that previously required manual data transfers.

The commercial threat is strongest in standardized bookkeeping. A business paying an accountant to categorize ordinary expenses and reconcile bank transactions has increasingly capable software alternatives. Some of that work will become difficult to charge much for.

Complex work creates a different problem. Revenue recognition, unusual transactions, audit preparation, tax interpretation and financial advice require judgment and accountability. Even when AI prepares the first version, customers may still need a qualified professional to review the result.

This divides the market into two economic categories. Routine processing is becoming a software function. Specialized accounting judgment remains a professional service, even when AI reduces the number of hours required.

Accounting firms built around repetitive bookkeeping have the most to lose. Firms that provide tax expertise, complicated reporting and business advice are in a better position. Their work is more difficult to standardize, and clients often value having someone responsible for the answer.

Software vendors have another advantage here: they can automate work across thousands of businesses without accepting responsibility for every customer's full accounting engagement. That difference could become more important as AI systems take on increasingly complicated tasks.

Is AI actually making accounting firms more profitable?

Accounting firms are adopting AI quickly, but the evidence that it has produced a major improvement in industry-wide profit margins remains limited.

Thomson Reuters' 2026 Future of Professionals research surveyed 538 tax and audit firm professionals across 40 countries. It found that 81% were using AI at least several times a week. Meanwhile, 89% of surveyed corporate tax clients considered AI-enabled quality improvements very important or essential.

Clients are also becoming less patient with firms that fail to modernize. The research found that 32% were reconsidering, or planning to reconsider within the following year, firm relationships because of insufficient AI progress. Among tax and audit firm leaders, 48% reported financial pressure to move faster with AI, while 34% of respondents said their firms had not significantly changed their commercial models.

Professional services businesses are still growing. EY reported $57 billion in fiscal 2026 global revenue, up 4.7%, with managed services expanding 13% to approximately $7 billion. Those managed services extend well beyond accounting, but the figures show that businesses continue to pay external professionals to manage complicated work.

The accounting labor market also shows continuing demand. According to AICPA data, 75% of surveyed public accounting firms that recruited graduates in 2024 expected to hire at least as many in 2025.

The more revealing figures concern profitability. The 2025 Rosenberg Survey found that average accounting firm revenue increased 7.9%, compared with 10.7% in the previous survey. Average income per partner grew only 3.2%, reaching approximately $615,000.

Revenue was growing more than twice as fast as partner income. That does not mean AI caused weaker profit growth. It does mean that increasing technology adoption and rising revenue cannot be treated as proof of rapidly expanding profits.

Performance also varied considerably by firm size. Firms generating $2 million to $5 million in revenue reported almost 25% growth in income per partner, while firms generating $10 million to $20 million experienced a 7.2% decline.

The firms to watch are those increasing clients per accountant, revenue per employee and operating margins without sacrificing accuracy or service quality. Those are the numbers that would demonstrate a genuine change in the business model.

For now, widespread AI usage is clear. A sustained profitability breakthrough across accounting services is much less clear. That gap should make investors cautious about valuing AI-enabled firms as if their economics had already become those of software companies.

If you want more recent data on this point, please see our latest AI accounting market report.

Can AI accounting firms earn more per customer and keep charging premium prices?

AI accounting firms can charge considerably more per customer than basic accounting software providers because they offer completed work and access to professionals. Their problem is keeping those prices as the underlying work becomes cheaper to automate.

Pilot's public pricing makes the distinction visible. Its Essentials bookkeeping product starts at $99 per month, while its Core offering starts at $299 per month and includes a US-based bookkeeper who handles and reviews the accounts.

The difference becomes larger for clients requiring broader financial services. Specialized startup packages have advertised bookkeeping from $599 per month and combined bookkeeping and finance services from $2,950 per month.

At those advertised starting prices, annual customer revenue ranges from $1,188 for Essentials to $35,400 for the broader finance package. The packages cover different work, but they demonstrate how much more a provider can charge when professional services are included.

Consider two hypothetical businesses. A software startup with 10,000 customers paying $100 per month generates $12 million annually. An accounting firm with 1,000 customers paying $1,000 per month generates the same revenue.

The difference appears in delivery costs. The software company must maintain its platform and support its customers. The accounting firm must also complete the work, resolve exceptions and employ or contract the professionals needed to handle each account.

There is a pricing problem too. A business that only needs bank reconciliation, expense categorization and basic financial statements has little reason to pay substantial manual bookkeeping fees if a reliable automated product can do the same work for a fraction of the cost.

Pilot's $99 monthly entry-level offering gives customers a visible reference point for straightforward bookkeeping. It also creates pressure on firms charging much higher prices for work that is becoming increasingly automated.

Professional services are more defensible where accounting becomes complicated. Businesses preparing for fundraising, external audits, acquisitions or difficult tax filings often need advice, professional review and interpretation that a standardized bookkeeping product cannot fully provide.

Thomson Reuters' 2026 State of Tax Professionals research found that firms were expanding into tax strategy and business consulting while continuing to invest in technology. Those services offer a way to maintain revenue as routine processing becomes cheaper.

We expect the greatest price pressure on firms selling repetitive bookkeeping at traditional service rates. Providers specializing in complicated tax work, financial reporting and advisory services have more room to defend premium pricing.

Higher revenue per customer is a real advantage for accounting firms. But unless AI removes enough labor from delivery, much of that additional revenue will continue flowing into salaries and operating expenses rather than profit.

Are AI-native accounting software startups growing fast enough to threaten established platforms?

Rillet shows that AI-native accounting software can win customers quickly. But QuickBooks remains vastly larger, and its revenue is still growing at a rate most startups would struggle to match in absolute dollars.

Rillet emerged from stealth in 2024 and ended that year with approximately 100 customers, according to the company's account of its early development. By August 2026, it reported more than 600 customers, including public companies and large enterprises.

That represents more than sixfold growth in its reported customer base from the end of 2024, although the customer figures reveal little about average contract values, retention or profitability.

Rillet also announced a $100 million Series C at a $1 billion valuation. The company said its recurring revenue run rate had doubled over the preceding quarter, but it did not disclose the absolute amount.

The comparison with Intuit remains striking. QuickBooks Online Accounting revenue increased from $3.38 billion in fiscal 2024 to $4.12 billion in 2025 and $5.05 billion in 2026.

QuickBooks added approximately $1.67 billion in annual accounting revenue over those two years, an increase of nearly 50%. Its annual growth rate was 22% in 2025 and 23% in 2026.

Rillet's growth is impressive for a young company selling core financial infrastructure, but QuickBooks is adding hundreds of millions of dollars in accounting revenue each year. A fast-growing startup can still be a very long way from changing the market's competitive balance.

The most promising opportunity for Rillet may be customers who need more complex financial systems than small-business bookkeeping products can provide. Companies considering Oracle, SAP, Workday or other enterprise platforms have different requirements from a small business choosing its first accounting package.

There is also a distribution disadvantage for startups. Intuit can introduce AI features to existing customers without winning every account from scratch. New entrants may need to finance sales, implementation and migrations before achieving comparable recurring revenue.

AI-native software could produce major new companies. But it is far too early to assume that better automation alone will overcome the scale, integrations and customer relationships of established financial platforms.

If you want more recent data on this point, please see our latest AI accounting market report.

Who has the stronger customer relationship: accounting firms or accounting software companies?

Accounting firms own valuable professional relationships. Software companies often control the financial systems those relationships depend on. For scalable profits, the second position looks more attractive.

A small business may trust its accountant to interpret financial results, prepare tax filings and advise on difficult decisions. Changing accountants can be inconvenient because the professional understands the company's history and circumstances.

Software creates another kind of dependence. Financial records, transaction histories, integrations, permissions and established workflows are difficult to migrate without disrupting operations.

A business might change accountants while keeping QuickBooks. An accounting firm might replace one software provider with another, but doing so across dozens or hundreds of clients can be complicated and expensive.

Sage offers a useful measure of software resilience. In fiscal 2025, approximately 97% of its underlying revenue was recurring, and its renewal rate by value reached 101%. Revenue retained from the existing customer cohort, including upgrades and other changes, slightly exceeded its starting value.

Those figures do not directly measure switching costs, but they demonstrate how durable an established accounting software business can become.

Accounting firms are also attractive customers for software vendors. Intuit has built Accountant Suite around this opportunity, helping firms manage clients, workflows and automated financial tasks while keeping professionals inside the QuickBooks ecosystem.

Startups are pursuing similar distribution channels. Basis develops AI agents for accounting and tax firms. Truewind focuses on accounting workflow automation. Numeric serves corporate accounting teams, including finance departments at companies such as Brex, Plaid and Wealthfront.

Rillet has established relationships with professional services firms, including EY, Armanino and Wiss. Those arrangements can help enterprise customers adopt new accounting technology while keeping experienced professionals involved.

One firm may manage dozens or hundreds of business clients. Winning that firm can give a software vendor access to substantially more accounting activity than winning one small business at a time.

Direct control of the business's financial workflows creates additional revenue opportunities. BILL reported approximately $1.65 billion in fiscal 2026 total revenue, with transaction fees representing the majority. Financial software can monetize payments and transaction activity rather than relying entirely on subscription charges.

That is a powerful position. A provider connected to accounting, banking and payments can earn revenue from several parts of a customer's financial operations, while allowing independent accountants to deliver the professional services.

Not every software vendor will establish such a position. Narrow AI tools that simply categorize transactions or suggest journal entries are easier to replace as those capabilities become widely available.

But platforms that control financial records, workflow integrations and transaction activity are harder to displace. They can sell directly to businesses, distribute through accountants and introduce new services across an existing customer base.

Professional relationships will remain important for complex work. The software platform used across many independent firms, however, can benefit from those relationships without employing the professionals responsible for every engagement.

Could AI accounting firms eventually achieve software-like profit margins?

AI accounting firms could approach software-like profitability if automation allowed each accountant to serve several times as many clients. The public evidence has not yet demonstrated that improvement consistently.

Consider an accounting firm charging $500 per month for bookkeeping. With 1,000 customers, the business generates $6 million annually. If 20 accountants handle those customers, each accountant manages 50 accounts.

If automation allowed the same team to handle 2,000 customers without reducing prices, annual revenue would double to $12 million. Revenue per accountant would increase from $300,000 to $600,000.

That would be a major improvement in labor productivity. The company would still face technology, support, insurance, sales and management expenses, so revenue per accountant should not be confused with profit.

We can extend the calculation across several hypothetical operating configurations. Every scenario assumes a $500 monthly subscription per customer.

Customers	Annual revenue	Accountants	Customers per accountant	Revenue per accountant
500	$3M	20	25	$150K
1,000	$6M	25	40	$240K
1,000	$6M	20	50	$300K
1,500	$9M	20	75	$450K
2,000	$12M	20	100	$600K
3,000	$18M	25	120	$720K
5,000	$30M	35	143	$857K

The most interesting scenarios are those in which a firm doubles or triples the number of clients handled by each accountant. Fixed personnel costs would be spread across much more revenue, potentially transforming margins.

There are reasons to be cautious. More accounts also mean more client communication, exceptions, regulatory requirements and professional review. Automated bookkeeping can reduce the work involved, but clients do not become identical simply because their transactions are processed by the same system.

Price competition could also absorb part of the productivity gain. If automation cuts delivery costs across the industry, customers may demand lower bookkeeping fees rather than allowing providers to retain the entire saving.

A firm doubling its clients per accountant while maintaining pricing could become dramatically more profitable. A firm doubling productivity while cutting prices in half would generate little additional revenue per accountant.

That makes pricing power almost as important as automation itself. The strongest services businesses will be those that reduce labor costs without turning their offerings into interchangeable, low-priced bookkeeping products.

Most AI-native accounting firms have not disclosed the operating margins, workforce productivity or client retention needed to establish that result. Until they do, software-like profitability remains a plausible opportunity rather than a demonstrated industry outcome.

If you want more recent data on this point, please see our latest AI accounting market report.

Are investors backing AI accounting software, buying accounting firms or betting on hybrids?

Venture capital is backing AI accounting infrastructure, while private equity is buying established accounting practices. Both strategies could benefit from automation, but they rely on very different sources of value.

Rillet has attracted more than $200 million in cumulative funding, including its $70 million Series B in 2025 and $100 million Series C in 2026. Numeric raised a $51 million Series B in November 2025 to expand beyond financial close management into a broader set of accounting workflows.

These companies are developing technology designed for repeated use across many finance teams. Investors are financing product development, distribution and the possibility of rapid recurring software revenue growth.

Accounting firm investors are taking a different approach. Private equity has increasingly backed the consolidation of professional practices, combining existing clients and employees with centralized operations and technology.

CBIZ's acquisition of Marcum illustrates the scale of the opportunity. Its financial services revenue increased from $1.36 billion in 2024 to $2.30 billion in 2025, approximately 69% growth. Much of that increase came from the acquisition rather than organic expansion.

Consolidation offers immediate access to paying customers, experienced professionals and established relationships. AI could improve the economics of acquired practices by reducing duplicated administrative work and automating standardized accounting tasks.

The difficulty is integration. Acquired firms may use different software, pricing arrangements, accounting procedures and management structures. Buying client relationships does not automatically create a standardized technology platform.

Meanwhile, the business models are beginning to overlap. Pilot is moving from managed bookkeeping toward autonomous accounting software, while preserving human-supported services for customers who need them.

Collective is following a similar path for self-employed business owners. In April 2026, it acquired Open Ledger, an embedded accounting startup, to strengthen its technology platform. Collective already offered bookkeeping, payroll, taxes and business administration through a combined service.

Intuit is moving in the other direction. Its software business increasingly includes AI-driven workflows and connections to accounting experts. Customers can receive automation and professional assistance without necessarily leaving the platform.

That makes hybrid offerings a likely direction for the industry. Software providers want to complete more accounting work, while service companies want to automate more of their delivery.

But hybrid products can have very different economics. A software-led platform that sells professional support selectively may retain high margins. A services-led company that automates routine work still has to manage its accountants, clients and engagement obligations.

AI features themselves will also face commoditization. Transaction classification, reconciliation suggestions and basic anomaly detection are unlikely to command large premiums indefinitely. The more durable software businesses will be those embedded in financial records, reporting processes and payments.

Investors are therefore funding two credible opportunities: scalable financial infrastructure and more efficient professional services. The eventual returns will depend on how much recurring revenue and profit each model captures, not simply how much AI it deploys.

Neither category has yet disclosed enough AI-specific financial performance to establish superior investment returns. Funding rounds and acquisitions show where capital is flowing. They are not evidence that the profitability gains have already arrived.

Which AI accounting business model wins: software or firms?

AI accounting software is the stronger business model for scalable profits. AI-enabled accounting firms have a substantial opportunity to become more efficient and earn more from each customer, but their path to software-like margins is less certain.

The clearest evidence comes from businesses already operating at scale. Established software providers have demonstrated recurring revenue, customer retention and operating margins above 20%. AI-native challengers such as Rillet and Numeric are attracting funding and customers, although their profitability remains largely undisclosed.

Accounting firms continue to serve a large and valuable market. Professional advice, complex reporting and accountability still matter. AI could make these services significantly more profitable by reducing routine labor.

However, making an accounting firm more efficient does not give it the same economics as a software platform serving thousands of additional customers without hiring accountants for each new group of clients.

The most attractive position is likely to belong to companies that control financial records, automate accounting workflows and support professional accountants when their expertise is needed. Those platforms can benefit from AI adoption across thousands of firms rather than operating every accounting engagement themselves.

Specialized AI accounting firms can still become excellent businesses. Providers that automate most bookkeeping while earning higher fees from tax, reporting and advisory work may build profitable, durable operations. They could also attract substantial acquisition interest from larger professional services groups.

Their biggest unanswered question is whether automation can produce sustained improvements in operating margins once software costs, human oversight, client service and pricing pressure are taken into account.

For software companies, the major risk is commoditization. Basic AI bookkeeping features are becoming easier to reproduce. Vendors that lack proprietary distribution, sticky workflows or control of the underlying accounting system may struggle to defend their prices.

That leaves a fairly clear hierarchy. Embedded accounting platforms have the strongest position. Specialized AI software with a compelling workflow advantage comes next. AI-enabled firms can build profitable service businesses, but routine bookkeeping providers face the greatest pressure as automation improves.

Our judgment favors software. Firms will remain important customers, partners and service providers, but the companies owning the accounting infrastructure are better positioned to capture profits from automation across the market.

If you want more recent data on this point, please see our latest AI accounting market report.