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Battery Ventures puts $40 million behind Miter's push beyond construction payroll
Battery Ventures led a $40 million Series B in Miter, a construction payroll and workforce software company, lifting its total raised to $78 million. The round is larger than all of Miter's earlier funding combined and pays for a push from paying crews into contractors' payables, safety and project data.
The Investor · Invest desk
What happened
- Existing investors Bessemer Venture Partners and Coatue took part in the Series B alongside Battery.
- Miter serves more than 2,000 contractors and has tripled its customer count since its Series A in May 2025, according to Pulse 2.
- Roughly two of every 100 US construction workers are paid through Miter, and contractors use it across hundreds of thousands of active jobs each month.
- Miter plans to spend the money on AI products for back offices and jobsites, more engineers in San Francisco and New York, and go-to-market teams across the US.
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Why it matters
- capability Because Miter already runs payroll and job costing for its customers, its planned payables, safety and project intelligence tools can be sold on data those contractors have already put into the system.
- exposure Miter credits AI data center projects for much of the construction hiring behind its growth, so a slowdown in those projects would hit it through the number of workers its payroll product pays.
- constraint Brown credits certified payroll, multi-state withholding and state break rules with keeping other vendors out. Miter now has to keep each rule current in every state its customers' crews work in.
Subtract the new money from the $78 million total and Miter had raised $38 million before this round [1]. On its own, the Series B is slightly larger than all its earlier funding combined. The company did not disclose a valuation, revenue, pricing, or how much each investor put in. So the size of the stake the $40 million bought cannot be worked out from the public record.
Working back from the tripling Pulse 2 reports, Miter had about 670 customers at its Series A [2], roughly 16 months before this announcement [3]. Miter's release cites Bureau of Labor Statistics figures showing construction added 22,000 jobs in August while overall US employment fell [5]. It says AI data center projects drove much of that growth [6]. "The U.S. has never needed this much new infrastructure this fast," said Connor Watumull, Miter's co-founder and chief executive [9].
Construction payroll is harder than most. Contractors "job cost," tracking pay against specific projects and cost codes, and crews that move between jobsites mean taxes withheld across several states [11]. Publicly funded work adds prevailing wage rules and certified payroll reports, with state meal and rest break rules and OSHA recordkeeping on top [11]. Watumull says most contractors handle this with a "Frankenstack" of 1980s-era software, spreadsheets and paper [10]. "The construction industry is tremendously complex, which has made it difficult for technology providers to develop robust tools attuned to customers' specific demands, despite the large potential market," said Michael Brown, a Battery Ventures general partner [12].
On Battery's reading, payroll is the entry point to a contractor's books. The accounts payable, safety and project intelligence products Miter is building [8] would be sold to customers whose labor and cost data already sit in its system. Brown said "we're excited to watch them leverage technology to take on more of the work their customers do by hand today" [13]. On a cyclical reading, the tripling measures the building boom as much as the product. If Miter's fees follow the headcount it pays, a slowdown in data center hiring would reach its revenue directly. A third reading concerns the insiders: Bessemer and Coatue following on could be conviction, or a pro-rata check to avoid dilution.
I think the first reading is closer to right, because the customer list is broader than data centers. Clayco is an Engineering News-Record Top 5 design-build firm, and Haugland Group works across energy, heavy civil and marine with more than 1,600 employees [4]. Miter also sells to SMBs [15]. The case fails if customer growth stalls as construction hiring flattens, or if payroll customers do not buy the payables and safety tools. This round shows that Battery, Bessemer and Coatue wanted more of Miter. It is not evidence of what investors across construction software are paying for back-office tools.
What to watch
- Whether Miter reports adoption of its accounts payable, safety and project intelligence products among existing payroll customers.
- Monthly BLS construction employment figures, since Miter ties the hiring behind its growth to AI data center projects.
- A disclosed valuation for Miter in a later round or secondary sale, the first way to price the Series B against its customer base.