Billow

Billow is an AI finance platform that automates the manual assembly work behind the month-end close. The company, Billow Labs, Inc., is backed by Y Combinator and was founded by an accountant and a platform engineer, which shows in where the product puts its attention: not on dashboards, but on the reconciliations, accruals and workpapers that consume the first weeks of every month. Billow describes its job simply as eliminating manual finance work, with the finance team reviewing and approving what the system prepares.

The product works inside the systems a finance team already runs rather than pulling everything into a separate workspace. Billow connects to NetSuite, QuickBooks, Dynamics 365, Xero, Excel, Coupa, Bill.com, Ramp and Slack, reads balances and transactions where they live, and writes results back. A close workflow is built from those pieces: a month-end trigger pulls the trial balance, an agent matches transactions, and the output goes to a reviewer. The company says it learns an existing process from prior closes, so teams do not have to redesign their close to adopt it.

Coverage centers on the recurring close: bank and credit card reconciliations, balance sheet accounts, accruals, prepaids and fixed assets, payroll and expense entries, multi-entity consolidation, and reporting with close workpapers. Billow also packages narrower workflows, including turning signed contracts into an updated contract log and accrual schedules, tracing budget-to-actual variances and drafting commentary, and converting open purchase orders into accrual schedules with prepared journal entries. Each produces a draft that a person signs off on.

The design assumption is that automation should surface exceptions rather than hide them. In a reconciliation run, Billow matches the bulk of transactions and places the remainder in a queue with context such as an ACH without an exact ledger match, a check outstanding since the prior month, or a wire that matches two bills instead of one. Workpapers are prepared in Excel and sent for approval, with approval trails kept so a reviewer can see what changed and who accepted it.

Security is pitched at the reviews finance and compliance teams actually run. Billow states that it holds SOC 2 Type II and SOC 1 reports, aligns with SOX segregation-of-duties expectations, encrypts data in transit with TLS 1.3 and at rest with AES-256, and does not train models on customer ledger data. A HIPAA-configurable deployment under a BAA is offered when protected health information is in scope. Buyers should verify current reports and scope directly during a security review.

Billow is sold through a demo rather than a self-serve signup, and no price list is published. Teams typically start by mapping one workflow, often bank reconciliations, then extend to accruals, consolidation and reporting once the review loop is trusted. It fits organizations already running a mainstream ERP, particularly multi-entity and life-sciences finance teams, more than very small businesses closing a single set of books.