FullSeam Launches: Your AI-Powered Finance and Accounting Teammate

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·
February 26, 2026

Fullseam recently launched!

Launch YC: FullSeam: Your AI-powered finance and accounting teammate

"AI agents that handle accounts receivable, accounts payable, cash application, reconciliation, and more."

TL;DR:

FullSeam is your AI-powered finance and accounting teammate.
FullSeam agents log into a company's existing accounting tools and perform routine tasks that accounts receivable and accounts payable teams usually do by hand - like communicating with vendors and customers, recording payments, and updating financial records.

Ask: Is your accounting team doing AR and AP manually? Introduce them! Email here or book a demo here.
They are also helping customers with cash application, reconciliation, and more. Feel free to reach out if your team is doing a process manually that you think could be automated!

https://www.youtube.com/watch?v=-mtzIp6MhFE

Founded by Thomas Dowling, Aaron Coppa & Geoff Segal

They are the same team that founded TaxProper, their first YC-backed company. At TaxProper, they paid more than a $1 billion a year in property tax payments for their customers until they were successfully acquired by Opendoor.

They started FullSeam because they lived this pain themselves.

At TaxProper, they were growing quickly — but their accounting team was drowning in invoicing, reconciliations, customer questions, and exception handling. The software they used kept records, but it didn’t do the work. Humans still had to chase emails, upload documents, correct entries, and follow up until payment landed.

They realized accounting teams don’t need another dashboard — they need teammates.

How it works

FullSeam's AI agents plug into your ERP, billing system, and spreadsheets and take over repetitive, error-prone accounting and finance work – without changing how your team operates.

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For accounts receivable teams, FullSeam:

  • Follows up with customers until payment is received
  • Produces requested documentation
  • Enters invoices and updates directly into customer AP portals

For accounts payable teams, FullSeam:

  • Ingests invoices from email, portals, and PDFs
    Matches invoices to POs, contracts, and proof of service
  • Follows up with vendors when information is missing
  • Categorizes expenses, pushing clean entries into your GL

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Learn More

Visit fullseam.com to learn more.
Is your accounting team doing AR and AP manually? Introduce them! Email here or book a demo here.
They are also helping customers with cash application, reconciliation, and more. Feel free to reach out if your team is doing a process manually that you think could be automated!
Follow Fullseam on LinkedIn & X.