ZeraBooks builds AI bookkeeping software for small businesses, bookkeepers and accounting firms. Customers upload bank and credit card statements, and ZeraBooks books every transaction to the chart of accounts, reconciles each statement to the cent and closes the month for review. Accounting firms also use ZeraBooks as a bank statement converter that turns client PDF statements into balance-checked Excel or CSV files, and teams at top-10 U.S. accounting firms use it. ZeraBooks also builds custom solutions for accounting firms. In October 2026, Accounting Today covered the launch of Ask Zera, the AI bookkeeper inside ZeraBooks.