Eight new deals in the last three weeks add $326 million.
Click a logo for the company funding announcement.
By CPA Trendlines Research
Even as the line blurs between software developers and accounting firm operators, AI tax and accounting startups are scarfing down new funding at a rate of $170 million a month so far this year.
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The latest eight deals add another $326 million to the haul, bringing the year’s total so far to about $1.8 billion, counting a $175 million K1x round the tally previously missed, according to a CPA Trendlines market study of just 50 of the leading players.
And the biggest check lands not on a startup promising to replace the accountant, but on a company selling AI agents to the tax professional.
In this edition of the CPA Trendlines 2026 Hot Tech firms, Blue J, the Toronto tax research company, announces a $176 million Series E, led by JMI Equity at a valuation above $700 million. Only Paris-based Pennylane’s January round is larger in the 2026 tally.
Hyphenate, formerly Maximor, follows with a $45 million Series A for agents that work inside corporate finance teams. Collective adds $40 million in equity, Sumary $25 million, Ravical $17 million, Clark $11 million, Kabilio €10 million, and Noewe Accounting €500,000.
The tech tally now covers more than 50 companies and $1.824 billion in trackable 2026 financing.
Investors are placing their bets on all sides of the new AI phenomenon, with some backing software developers, others backing firm operators, some selling around accountants straight to CFOs and small business owners, and others selling through accountants. Investors are backing both the firms that accountants already run and the businesses that want to steal their clients — often in the same week. The latest developments show both models expanding while licensed professionals continue to carry responsibility for the work.
The tax professional gets an agent
Blue J’s round marks a change in what the company sells. After building its business answering tax questions, it plans to use the new money to scale Workflows, a set of AI agents that carry out routine tax tasks, and to expand in the U.K. and other markets abroad. The company lists reviewing returns before filing, preparing IRS notice responses, analyzing partnership, LLC, and trust agreements, assessing multistate nexus, and drafting client communications.
Each task comes with its sources and a record of the steps the software takes, so the professional checks the work before making the final call. “An answer is rarely the end of a tax professional’s job,” says Benjamin Alarie, Blue J’s CEO and co-founder.
The company reports more than 6,500 organizations using its software, including Big Four firms, and 165% growth in annual recurring revenue in the 15 months after its Series D.
K1x sits just behind Blue J at No. 3. Its $175 million growth investment, announced in April and led by Sumeru Equity Partners with existing backer Edison Partners, backs software that automates the collection and reporting of K-1, 1099, W-2, and 990 tax data for private-markets investors and their tax preparers, as CPA Trendlines reports.
New capital for the work inside existing firms
Sumary’s round brings $25 million in seed funding led by Singular, with earlier investors including byFounders, Partech and Tenity participating. The Copenhagen-founded company now makes London its commercial hub. Sumary software prepares month-end close, VAT, and year-end work across the ledgers a firm’s clients already use, and accountants review and sign off on the prepared work. The company started in 2025 with a $4.2 million pre-seed.
Ravical’s $17 million seed, led by MMC Ventures, with Lakestar, Pitchdrive and Shapers participating, equips the Belgian company to build software around a firm’s own knowledge and client information, aiming to extend practices that otherwise depend on individual staff members. So far Ravical has raised $25 million.
Kabilio, a Barcelona company that automates invoice processing and bank reconciliation for accounting firms and connects them with their business clients, gets €10 million. Picus Capital and Visionaries lead the round, with Spain’s public innovation agency, CDTI, participating. The money also funds the rollout of an accounting AI agent.
Rulen, formerly LexSA, raises €1.8 million in its first funding round. The Italian company automates tax and accounting workflows for tax firms, specialist practices, groups consolidating professional firms, and multinational tax teams. Its renaming signals a shift from a research assistant to software that executes the work.
Sumary, Ravical, Kabilio, and Rulen sell a way for existing firms to prepare more work. Their economics depend on firms adopting the technology and converting released capacity into billable services, better delivery, or lower costs.
Finance-team agents reach into the close
Hyphenate’s Series A, led by Nexus Venture Partners with B Capital and earlier backers Foundation Capital, BoldCap and Gaia Ventures, brings its total funding to $54 million. The New York company sells agents across order-to-cash, treasury, general ledger accounting, procure-to-pay, and reporting. It reports explosive revenue growth since a $9 million seed round a year ago.
Adaptive’s Series B contributes $30 million to the CPA Trendlines tally. Tidemark leads the round, which finances project-accounting software for construction businesses and their accounting partners. Its agents gather information from project records and the field for job costing, payables, billing, and work-in-progress reporting, and a person reviews actions before they reach the general ledger.
Hyphenate’s and Adaptive’s tools sell to finance departments, not accounting firms. But they automate the close, reconciliation, and reporting work that outsourced accounting practices also sell, and some — Adaptive among them — reach clients through accounting partners.
Top Venture Capital AI Deals in Tax and Accounting
Sort, search or filter: 55 deals totaling $1.8 billion, 2026. (via CPA Trendlines Research)| Rank | Company | Category | What it does | Stage | USD millions |
|---|---|---|---|---|---|
| 1 | Pennylane | Tools for finance teams | Provides accounting production and financial management software shared by firms and clients. | Growth financing | 199.5 |
| 2 | Blue J | Tools for accountants | Provides tax research and AI agents that review returns, draft IRS notice responses and analyze agreements for tax professionals. | Series E | 176 |
| 3 | K1x | Tools for accountants | Automates K-1, 1099, W-2 and 990 tax data collection and reporting for private-markets investors, funds and their tax preparers. | Growth investment | 175 |
| 4 | Fonoa | Tools for finance teams | Automates indirect tax calculation, invoicing and reporting; acquires PwC’s Edge platform. | Series C | 110 |
| 5 | Basis | Tools for accountants | Prepares tax workbooks, journal entries and reconciliations for accounting firms. | Series B | 100 |
| 5 | Numeral | Tools for finance teams | Automates sales tax compliance with in-house specialists and an accounting-firm partner program. | Series C | 100 |
| 5 | Rillet | Tools for finance teams | Provides a general ledger, reporting and close software for finance teams and firm partners. | Series C | 100 |
| 8 | Modus | AI-run firms | Combines audit technology with investments in established accounting firms. | Combined seed and Series A disclosure | 85 |
| 9 | Accrual | Tools for accountants | Organizes client documents and prepares draft tax returns for professional review. | Launch funding disclosure | 75 |
| 9 | Fieldguide | Tools for auditors | Automates audit and advisory work within firms’ engagements. | Series C | 75 |
| 11 | Dougs | AI-run firms | Delivers regulated accounting services directly to small businesses through its own AI and automation platform. | Funding round; stage unspecified | 57 |
| 12 | Hyphenate | Tools for finance teams | Provides AI agents for corporate finance teams across order-to-cash, treasury, general ledger, payables and reporting. | Series A | 45 |
| 13 | Collective | AI-run firms | Provides accounting, bookkeeping, payroll and tax services for solo business owners through an AI-enabled platform. | Series B | 40 |
| 14 | Andera | Tools for auditors | Automates controls testing, evidence gathering and workpapers for internal and external auditors. | Series A | 37 |
| 15 | Multiplier | AI-run firms | Acquires specialist firms and builds AI tools inside them, retaining local brands and leadership. | Series B | 35 |
| 16 | Onshore | AI-run firms | AI-powered tax platform combining intelligent automation with expert oversight. | Series B | 31 |
| 17 | Adaptive | Tools for finance teams | Automates construction project accounting, including job costing, payables, billing and work-in-progress reporting, with human approval before posting. | Series B | 30 |
| 18 | Sumary | Tools for accountants | Prepares accounting workflows across clients’ existing ledgers, including close, VAT and year-end work, for accountant review. | Seed | 25 |
| 18 | Taxwire | Tools for finance teams | Combines sales tax automation with managed compliance services and tax specialists. | Combined seed and Series A | 25 |
| 20 | Stacks | Tools for finance teams | Automates corporate close, journal entries and variance analysis. | Series A | 23 |
| 21 | Circit | Tools for auditors | Audit confirmations and source verification. | Growth equity | 22 |
| 22 | Integral | AI-run firms | Delivers accounting, tax and payroll services with AI preparation and licensed professional review. | Series A | 20.52 |
| 23 | Petual | Tools for auditors | SOX testing and internal audit evidence. | Funding announcement; underlying company post describes two rounds | 20 |
| 24 | Ravical | Tools for accountants | Builds AI workflows around accounting and tax firms’ knowledge, client data, preparation and review. | Seed | 17 |
| 24 | Zamp | Tools for finance teams | Managed sales tax compliance. | New funding disclosure | 17 |
| 26 | Inscope | Tools for accountants | Financial statement preparation and review. | Series A | 14.5 |
| 27 | Cortea | Tools for auditors | Checks audit reports, disclosures and workpapers before auditor sign-off. | Seed | 13.68 |
| 27 | Skalar | AI-run firms | Delivers accounting, payroll, annual accounts and tax services directly to businesses. | Combined pre-seed and seed | 13.68 |
| 29 | Juno | Tools for accountants | Automates tax preparation and review for accounting firms. | Seed | 12 |
| 30 | Kabilio | Tools for accountants | Automates invoice processing and bank reconciliation for accounting firms and connects them with business clients. | Funding round; stage unspecified | 11.4 |
| 31 | Clark | Tools for auditors | Automates audit document requests, testing and workpaper preparation, with licensed auditors retaining review and sign-off. | Seed | 11 |
| 32 | Synthetic | AI-run firms | Builds bookkeeping software for startups meant to run without human bookkeepers; its founder questions current technical feasibility. | Seed | 10 |
| 33 | Linc | Tools for accountants | Payroll software for accounting and payroll firms. | Seed | 9.69 |
| 34 | Repodo | AI-run firms | Builds an audit business with qualified auditors retaining judgment and sign-off. | Pre-seed | 9.348 |
| 35 | neno | AI-run firms | Combines accounting, payroll and tax services with banking integrations and human accounting teams. | Seed | 7.524 |
| 36 | Limetax | AI-run firms | Takes equity stakes in accounting and tax practices and develops AI inside them. | Pre-seed equity | 6.84 |
| 36 | mika | AI-run firms | Combines automated bookkeeping with staff review and licensed partners for individual tax advice. | Seed | 6.84 |
| 38 | Byron | Tools for accountants | Prepares business tax workpapers in firms’ existing Excel and tax software workflows. | Seed | 6.5 |
| 39 | Atlas | Tools for accountants | Builds AI systems and operating infrastructure for independent accounting firms. | Seed | 6 |
| 40 | Benford | AI-run firms | Sells statutory audits with qualified auditors responsible for engagement scope and opinions. | Pre-seed | 5.7 |
| 40 | Taxforce | AI-run firms | Accounting and tax services for medical practices. | Seed | 5.7 |
| 42 | Midship | Tools for auditors | Automates controls testing and internal audit; acquired by Optro in May. | Seed | 4.15 |
| 43 | Denki | Tools for auditors | Financial audit evidence and controls testing. | Funding disclosure | 4.1 |
| 44 | Gradient | AI-run firms | Provides startup bookkeeping and tax services for a fixed monthly fee, with AI production and licensed CPA oversight. | Pre-seed | 4 |
| 45 | OCTA | Tools for accountants | Automates bookkeeping, reconciliations and monthly close, with accountant approval. | Seed | 3.5 |
| 46 | Alassio (formerly Rivage) | Tools for accountants | Payroll software for accounting firms. | Pre-seed | 2.964 |
| 47 | autoMEE | Tools for accountants | Automates accounting document workflows for firms and internal finance teams. | Seed | 2.5 |
| 48 | Auditstage | Tools for auditors | Audit methodology, evidence and review workflows. | Seed | 2.28 |
| 48 | Computis | AI-run firms | Combines accounting software with internal review and partner accountants handling filings and advice. | Pre-seed | 2.28 |
| 50 | Rulen | Tools for accountants | Automates tax and accounting workflows for tax firms, specialist practices and multinational tax teams. | First funding round; stage unspecified | 2.052 |
| 51 | Audrey AI | Tools for auditors | Automates audit evidence gathering and testing for audit firms. | Pre-seed | 1.8 |
| 52 | Dytto | Tools for accountants | Collects client information and automates email and administrative workflows. | Pre-seed | 1.71 |
| 53 | Maxed | Tools for accountants | Automates practice workflows and client communications, with firm approval. | Pre-seed | 0.85 |
| 54 | Jupid | Tools for finance teams | Accounting and tax tools for small businesses. | Pre-seed | 0.84 |
| 55 | Noewe Accounting | AI-run firms | Develops accounting services combining AI and automation with financial analysis and tax expertise for small businesses. | Operating-company investment; stage unspecified | 0.57 |
Audit agents take on the follow-up
Clark’s round adds an $11-million seed led by Touring Capital, with Marathon Management Partners, Rerail and Sofeon Ventures also participating. Clark is formerly uiAgent; its audit agents are called Clerks. The round brings Clark’s capitalization to $16 million.
The company describes agents assigned to engagements to review documents, perform tests, prepare workpapers, and follow up with clients when information is missing. Licensed CPAs retain professional judgments, review and responsibility for signing the opinion. Clark also offers accuracy and peer-review guarantees. Those are vendor commitments, rather than independent measurements of an error rate.
The audit model extends a pattern already visible among Fieldguide, Andera and Cortea: software takes on preparation, evidence handling and repeatable checks while professionals retain accountability.
Whether that reduces total engagement effort depends partly on the time needed to review what the software produces. Indeed, more accountants are reporting a heavier review workload as production becomes increasingly automated and in need of oversight.
Other investors finance the competing practice
Collective collects $100 million, with $40 million in Series B funds led by General Catalyst, QED Investors and Gradient Ventures, and $60 million in a separate growth facility from General Catalyst’s Customer Value Fund.
Collective combines accounting, bookkeeping, payroll, and tax services for solo business owners. Its proposition asks the owner to buy the completed back-office work, rather than assemble and run a collection of accounting applications.
Lyon, France-based Dougs’ €50 million financing from existing investor Expedition Growth Capital, newly added to the research, contributes $57 million to the tally and ranks it 11th. Dougs delivers regulated accounting services directly to small businesses using technology developed in-house.
Gradient, an accounting firm for U.S. startups unrelated to the venture firm Gradient Ventures, emerges with a $4 million pre-seed from VentureFriends, Acadian Ventures, TinyVC, Heartfelt and Kima Ventures. It charges a fixed monthly fee, uses AI behind the scenes, and puts licensed CPAs in charge of service delivery.
Noewe Accounting’s round adds a smaller bet. Lithuanian crypto investor Philip Van Goethem supplies €500,000 for the development of AI- and automation-supported services, including financial analysis and tax recommendations.
Numica adds another route: $21 million in combined equity and debt from Roosh X and Flashpoint Capital to buy small U.S. accounting practices from retiring owners and move their client books onto its own AI platform.
A new No. 2 and a wider field
Pennylane’s €175 million financing, recorded at $199.5 million, remains the largest, at 10.9% of the tally. Blue J takes second at $176 million, or 9.6%, and K1x third at $175 million, or 9.6%, pushing Fonoa to fourth at $110 million. Basis, Numeral and Rillet tie at $100 million each. The top 10 together hold $1.196 billion, or 65.5%.
The mix shifts toward the accountant’s desk. Software sold primarily to accounting and tax professionals totals $641.7 million, or 35.2%, up from 19.1% in the October tally by CPA Trendlines. Tools for corporate finance teams still lead, narrowly, at $650.3 million, but their share falls to 35.7% from 46.8% even as Hyphenate and Adaptive add dollars. AI-run service providers account for $341.0 million, or 18.7%, and audit tools for $191.0 million, or 10.5%.