Aiwyn: How Justin Adams Grew From $250K to $3M ARR in One Year and Raised $127M for CPA Firms

TL;DR: Aiwyn is an accounting technology company that helps CPA firms get paid, starting with a simple client payment experience and expanding into practice management and tax software. It was founded in 2020 in Charlotte, North Carolina, by Justin Adams and four co-founders, after Adams sold his first startup, Digitize.AI, to Waystar. As he shared on the show, Aiwyn went from zero to about $250K ARR in 2021 and from $250K to roughly $3M ARR in 2022. Press coverage puts total funding at $127M as of December 2024, after a $113M round led by KKR and Bessemer Venture Partners. Since then, Aiwyn has bought QuickFee's U.S. payments business and Column Tax's technology. Adams told the early story on The Product Market Fit Show. The episode aired on November 18, 2024, about a month before the $113M round was announced, so that round is not discussed in the interview.

A note on sourcing. Anything labeled "as he shared on the show" comes from the interview and has not been independently confirmed. Funding, founding and acquisition figures labeled with a source and date were checked against press coverage and public filings in November 2026.

What does Aiwyn do?

Aiwyn sells software for the revenue side of accounting firms. Its first product let a firm's clients pay their invoices online, by card or ACH, the way they would pay on Amazon. TechCrunch described it in December 2024 as software that automates and reconciles payments and invoices for both CPA firms and their clients.

The idea came from a bad experience. When Adams sold his first company, the accounting firm that did the due diligence did good work. Then the bill came.

"I got an invoice like two or three months after the transaction closed and it said, mail our $80,000 due to this PO box." — Justin Adams, Aiwyn

He had already closed the bank account and had no checkbook. He ended up writing a personal check.

"And it just kind of left a sour taste in my mouth. And it's like, why would you put friction or make it painful for me to give you money, right?" — Justin Adams, Aiwyn

The hard part was not the payment page. It was the data. Mid-size and large firms run on legacy practice management systems that track billable hours and have no APIs, so finance teams pulled invoice data out by hand. Adams said Aiwyn's CTO built a patented "translation engine" that sits on top of those systems.

"Yeah, we had to invent a technology that could sit on top of these systems. It's called a translation engine and we've patented it." — Justin Adams, Aiwyn

The business model, as he shared on the show, is a SaaS platform fee plus revenue on payment volume. He put the average contract value at about $60K at the time of the interview.

Since the episode, Aiwyn has widened its scope. In May 2025 it acquired Taxa and launched Aiwyn Tax (CPA Practice Advisor, May 2025). In April 2026, a company press release announced Aiwyn Tax as a connector in Anthropic's Claude connector ecosystem, offering tax calculation infrastructure.

Key stat: as he shared on the show, about 40% of payments started coming through mobile once clients could pay from a link.

Who founded Aiwyn?

TechCrunch names Justin Adams and Pat Morell as co-founders, and Adams is Aiwyn's Chairman and CEO per the December 2024 funding announcement. On the show, Adams said Aiwyn started with five co-founders, an unusual choice he made on purpose. All five were still at the company four years in.

Before Aiwyn, Adams worked in back-office process automation at PwC. In 2016 he started Digitize.AI, which automated prior authorizations, the pre-approvals hospitals need from insurers before procedures like knee surgery. He bootstrapped it. As he shared on the show, it had about 15 employees when Waystar acquired it, the sale was eight figures, and he was the majority shareholder. Waystar later went public in 2024.

He stayed with Waystar until COVID hit, burned out, and stepped away. A month or two later, he said, the drive came back overnight. He set two conditions for the next company: raise venture money and build something big, and start with a large founding team instead of going it alone.

Adams has also been open about what the work costs him. The episode opens with a LinkedIn post he wrote about a panic attack that left him frozen on his stairs. He said he got dozens of private messages from founders dealing with the same thing. He manages it with exercise, meditation, his dogs and a set routine, and said episodes happen less often than they used to. He also does not believe in work-life balance at the early stage, because a startup's only edge is speed.

For more on this side of the job, see founder mental health.

How much has Aiwyn raised?

Rounds below come from company announcements, press coverage and PitchBook, as of November 2026, with episode details labeled.

• Friends and family, 2020: $2M. As he shared on the show, investors from his first company backed Aiwyn from day one, through convertible notes.
• Seed, 2021: $14M, led by Revolution Ventures, per Aiwyn's July 2021 announcement. Adams said the $14M included the earlier notes, and that Aiwyn had only about $10K to $15K in monthly revenue when it closed.
• Series A: about $20M, led by Bessemer Venture Partners. As he shared on the show, about $15M was primary and the rest let early friends-and-family investors and co-founders sell some shares. PitchBook dates a $20M Series A to April 2023.
• December 2024: $113M, led by KKR and Bessemer Venture Partners, announced December 19, 2024. TechCrunch reported total funding of $127M after the round. Some databases label it a Series B.

No valuation has been publicly disclosed. TechCrunch reported in December 2024 that Adams said Aiwyn made $8M in revenue in 2023, and that it served about 130 of the top 500 accounting firms.

Key stat: total funding of $127M as of December 2024, per TechCrunch's coverage of the $113M round.

How did Aiwyn find product-market fit?

Adams built the first product with three paying beta customers, one mid-size, one larger and one big, to make sure it worked across the market. The betas were not free. They paid about 20% of the future price and could walk away once the product went live.

"I'm not a big believer in giving stuff away for free, I just think there's a psychological thing that even if someone's paying $1 for, they value it differently than free." — Justin Adams, Aiwyn

The company started in May 2020, with co-founders meeting in his backyard. It went live with the three betas in early 2021. Two of the three converted. The biggest was in the middle of a new ERP rollout and did not have the bandwidth.

Next came a "Trailblazer" program, a smaller discount for early customers, which Adams said ran for roughly the first 20 customers. Selling to accounting firms meant selling to people trained to find what is wrong. What worked was hard ROI. In one case, he said, a firm's days sales outstanding dropped from about four months to two. That matters because firms are partnerships that pay out profits to partners and do not sit on cash.

Then word of mouth kicked in.

"And so I think that year was the year where when we were early on those three firms, I can't tell you how many firms said, love the idea. This is great. We want to be your 15th customer, not your fifth." — Justin Adams, Aiwyn

Accounting is a reputation-driven industry where firms talk at conferences and do reference calls before buying. Aiwyn leaned into that by making early champions look good and by promising white-glove service in a market frustrated with incumbent support. Asked when he knew he had product-market fit, Adams pointed to the end of 2021, at about 30 firms.

Key stat: as he shared on the show, ARR went from $0 to about $250K in 2021 and from $250K to about $3M in 2022.

For a similar story of building with early customers, see how to get design partners and Clio's 100-customer beta program.

Why did Aiwyn cut staff in the middle of its best year?

During the 2022 downturn, Aiwyn was growing fast. Adams still cut the team from about 30 to about 20, as he shared on the show. He called it the most excruciating part of the journey.

His reasoning was about runway, not growth.

"I think the number one job of a CEO is to make sure that company doesn't run out of money. You can survive everything else, but if you run out of money, then it's game's over, right?" — Justin Adams, Aiwyn

He said he plans as if he will never raise again, and maps a path to profitability after every round. At the time of the interview, he said Aiwyn had about $20M on its balance sheet and still operated that way. His view is that a founder who has to raise hands leverage to investors.

It paid off in the Series A. Adams said fixing unit economics early helped Aiwyn get eight to ten term sheets in a tough market, at around $4M to $5M ARR. He did not take the highest price.

"And as I told the partner who joined our board from Bessemer, said, if you don't create enough value to bridge that, call it $10 million valuation difference in me choosing you, then I've badly misjudged the value I think you can bring us." — Justin Adams, Aiwyn

He also took no secondary himself. He asked investors to let co-founders without a prior exit sell a small amount, enough to pay off a mortgage.

What has Aiwyn done since the episode?

The post-episode news is all expansion, verified as of November 2026:

• December 2024: closed the $113M round led by KKR and Bessemer to expand from payments into practice management and tax.
• May 2025: acquired Taxa and launched Aiwyn Tax (CPA Practice Advisor).
• September 2025: acquired QuickFee's U.S. payments business. QuickFee's own ASX filings put the price at about US$26.35M, around 5x that unit's FY25 revenue of US$5.3M. QuickFee kept its pay-over-time finance product and resells it through Aiwyn.
• November/December 2025: acquired Column Tax's tax technology, and its former CEO Gavin Nachbar joined Aiwyn. Aiwyn then sought 100 firms to pilot its 1040 tax preparation engine for the 2026 tax season. The price was not disclosed.

Key lessons from Justin's playbook

1. Start from a pain you felt. An $80,000 invoice sent to a P.O. box months late became a company. The wedge was small: make it easy to pay an accounting firm. 2. Never give it away free. Adams charged his beta customers about 20% of list price and gave them an opt-out. Paying users act like buyers and give real feedback. 3. Sell ROI to numbers people. Accounting firms adopt when the math is clear. Faster cash (DSO cut in half in one case) mattered more than features. 4. Protect runway even while growing. He cut a third of the team in his breakout year and plans every round as if it is the last one. That discipline produced eight to ten term sheets. 5. Pick the partner, not the price. He left about $10M of valuation on the table to work with Bessemer, which later co-led the $113M round.

"Continue to focus on the people that you bring into the company. At the end of the day, your company is nothing more, nothing more, nothing less than the collection of people and individuals that you have in there." — Justin Adams, Aiwyn

For more on building in this space, read product-market fit for fintech.

Listen to the full interview: He sold his 1st startup for 8 figures, grew his 2nd to $3M in a year, while battling panic attacks from the pressure.

FAQ: Aiwyn

Q: What is Aiwyn? A: Aiwyn is an accounting technology company for CPA firms, founded in 2020 and based in Charlotte, North Carolina. It started with client payments and invoicing and has expanded into practice management and tax software, including Aiwyn Tax.

Q: Who is the founder and CEO of Aiwyn? A: Justin Adams is co-founder, Chairman and CEO. TechCrunch also names Pat Morell as a co-founder. Adams previously founded Digitize.AI, which was acquired by Waystar.

Q: How much funding has Aiwyn raised? A: Aiwyn has raised $127M in total as of December 2024, per TechCrunch. That includes a $14M seed led by Revolution Ventures in 2021 and a $113M round led by KKR and Bessemer Venture Partners in December 2024. No valuation has been disclosed.

Q: Who are Aiwyn's investors? A: Revolution Ventures led the seed. Bessemer Venture Partners led the Series A and co-led the December 2024 round with KKR.

Q: What companies has Aiwyn acquired? A: Aiwyn acquired Taxa in May 2025, QuickFee's U.S. payments business in September 2025 (about US$26.35M, per QuickFee's filings), and Column Tax's tax technology in late 2025.

Sources: Listen to the Full Founder Story

• Justin Adams, Aiwyn — a repeat founder who sold bootstrapped Digitize.AI to Waystar for eight figures, then grew Aiwyn from $250K to $3M ARR in a year by making it easy for clients to pay their accounting firms.

Listen to the full episode at pmf.show for the complete story.

Last updated: November 2026