Taxwire Raises $25M to Automate Sales Tax Compliance Across 100+ Countries

Indirect tax compliance has quietly become one of the most punishing operational burdens facing growing companies, as a wave of state and local governments tighten enforcement to recover revenue lost to budget pressures. In the US alone, businesses must reconcile rates and rules across more than 22,000 city, county, and local jurisdictions, a fragmented system in which a single transaction can fall under three overlapping tax layers, each with its own definition of what counts as taxable. The companies absorbing this complexity are rarely tax specialists: finance teams already managing monthly closes, payroll, and audits are also expected to make high-stakes sales tax calls, often using legacy software that miscategorizes products and leaves them exposed to penalties. Taxwire addresses this gap by pairing an AI-native tax engine with a team of tax experts who take direct accountability for the outcome, handling everything from nexus monitoring and registration to filing, remittance, and the audit that follows if something goes wrong. The platform already integrates with major billing, e-commerce, and accounting systems, including QuickBooks, Xero, and NetSuite, and currently remits roughly $100M in sales tax annually for its customers, against a market in which US businesses remit over $600B in sales tax each year and roughly $5T in VAT changes hands globally. As pressure on finance teams to get indirect tax right intensifies, Taxwire is positioning itself as the infrastructure layer companies can hand the problem to entirely.

AlleyWatch sat down with Taxwire CEO and Cofounder Andrew Rea to learn more about the business, its plans for the company, and how they plan to use the new $25M in Seed and Series A funding.

Who were your investors and how much did you raise?

We raised a total of $25M across a Seed and Series A, led by Headline (Taylor Brandt), with Vinyl, Recall Capital, Nomo Ventures, Analog Ventures, and hundreds of angels. What I’m proudest of: every investor in the round was already on our cap table. They had a front-row seat to the business and chose to double down. A lot of the angels are finance leaders and founders who have lived this problem, and many of them are our customers.

Tell us about the product or service that Taxwire offers.

Taxwire owns sales tax and global VAT for finance teams, end to end.

We pair an AI-native tax engine with a team of tax experts to handle the whole sales tax problem: figuring out where you owe, registering, calculating tax correctly at checkout and on every invoice, managing exemption certificates, filing and remitting in every jurisdiction, and resolving the state notices when they come. You hand us the problem and stop thinking about it.

What inspired the start of Taxwire?

I lived the problem. In 2023 I was running finance at the fastest-growing school lunch company in America. We were scaling fast, selling food into schools across the country, B2B and B2C. It turns out sales tax on that gets complicated quickly, and I was the one who had to figure it out. The incumbents were black boxes, expensive and slow, and I could never get a human on the phone who understood the business. The newer tools were built for founders and small shops and fell apart the moment things got real. So I built what I wished I’d had.

How is Taxwire different?

Anyone can calculate a tax rate. That part is solved. The hard problem is everything around it: messy transaction data, products that don’t map cleanly to a taxable category, exemption certificates, nexus that shifts every time you grow, a notice that lands during close. Most tools assume the inputs are clean and the edge cases are rare. In indirect tax, the edge cases are the job. We take accountability for the outcome, audit and all, instead of handing you a dashboard and walking away. And we own the switch off legacy platforms. We’ve done that migration 150+ times.

What market does Taxwire target and how big is it?

We build for mid-market finance teams, roughly $20M to $500M in revenue, the companies with real complexity and lean teams. The market is enormous and unavoidable. Around $600 billion in sales tax is collected in the US every year, roughly $5 trillion in VAT globally, and indirect tax is 30 to 40% of all the tax remitted on earth. Every company that sells across state or national lines has to deal with it, and it only gets bigger.

What’s your business model?

We charge for the outcome. Customers pay a predictable usage subscription for the platform plus our managed service.

How are you preparing for a potential economic slowdown?

The honest answer is that a slowdown makes Taxwire more important, not less. When budgets tighten, states lean harder on sales tax to fund their own recovery, and they get more aggressive about auditing and chasing businesses that aren’t compliant. So the cost of getting this wrong goes up exactly when companies can least afford it. At the same time, a lot of what we do is recover money customers overpaid and keep them out of penalties, which matters more when every dollar counts. It’s a fairly counter-cyclical place to sit.

What was the funding process like?

Relatively simple, and I don’t say that to be glib. We’ve been fortunate to have great investors who believed in us from the very beginning, and the business had strong fundamentals and real momentum. Because everyone in the round was already on our cap table, this was existing investors doubling down with conviction rather than a process of convincing strangers.

What factors about your business led your investors to write the check?

Customers. The clearest signal in our business is that companies trust us with something that can genuinely hurt them if we get it wrong, and they stay, refer us, and give us more. About half of our new customers come from leaving a legacy provider. We remit around $100 million in sales tax a year already. Our investors had visibility into all of that, and into a team that takes the trust seriously. In the end they backed a product customers love in a market that has to exist.

What are the milestones you plan to achieve in the next six months?

The focus is winning the B2B experience. Three things specifically: expanding our international coverage aggressively, going deeper across B2B industries, and owning the workflow between the general ledger and the sales tax provider, which is where most of the real pain and manual work still lives.

What advice can you offer companies in New York that do not have a fresh injection of capital in the bank?

Focus on customers. Go talk to them, and go talk to the people who could be your customers. Investors want to back a product that customers genuinely love and that can also be a venture-scale business. The business model and the opportunity all matter, but what matters more than anything is simple:

Are customers using your product?
Are customers speaking highly of it?
Is your calendar full of current or potential customers who want to keep paying you for it?

Get those right and the capital tends to follow.

Where do you see the company going now over the near term?

We’re building the infrastructure that powers every dollar of sales tax and VAT collected. Today we remit about $100 million a year. That’s a rounding error against the size of the problem. Near term we go deeper and wider, more industries, more countries, more of the finance workflow, so that any company can hand us indirect tax and never think about it again. This is a trust business, and we intend to earn it.

What’s your favorite summer destination in and around the city?

Chinatown for a great meal : )