DayZero Accounting OS

DayZero is an Accounting OS that connects finance, revenue, operations and AI on one double-entry ledger. It includes bookkeeping, reconciliation, invoicing, bills, contracts, inventory, cash planning, reporting, client workspaces and agent workflows. Use it with your team or work with our accountants and engineers for managed books, CFO advisory, integrations and custom finance software. Feature availability depends on your configuration and add-ons.

DayZero runs purpose-built accounting agents — 24 agents with 638 tools, every write audited — and our accountants review the close. Every agent action is logged and reviewable. You set confidence thresholds that determine what gets auto-applied vs. what comes to you for review. Every entry includes full source attribution so you can verify any decision.

Yes. DayZero is built for auditability, not blind trust. Every AI action records its inputs, the source documents it referenced, the rule or match logic it applied, and a confidence score — all captured in an immutable audit trail you can review or export. You set confidence thresholds so anything uncertain routes to a human for review, and nothing is hidden. It's designed to satisfy your auditors and give your CFO the traceability they need to sign off.

Yes. DayZero has direct migration connectors for both QuickBooks Online and Xero — connect via OAuth and DayZero imports your chart of accounts, customers, vendors, items, transactions, and balances, finishing with an opening-balance journal entry and a trial-balance QA report. If your accountant stays on QuickBooks Online, keep it connected and DayZero syncs changes both ways after the import. From other platforms you can migrate via CSV import, and our team can assist with larger migrations.

Yes. Your data is encrypted: AES-256 at rest · TLS 1.2+ in transit. Preparing for SOC 2 Type II, report expected mid-2027; in the meantime we operate against the SOC 2 control framework, enforce role-based access controls, and maintain a full audit trail for every AI action. Your data is never used to train AI models — ours or our providers'.

Run the books yourself on DayZero for $100 a month after a 30-day free trial, or have our accountants run them from $300 a month. Accounting firms pay per client. Every engagement can start with a free five-day pilot, and larger work such as QoE or custom software is quoted after it. See pricing.

You get ours. Most engagements are run end-to-end by our accountants on our platform — categorization, reconciliation, close, and reporting handled for you. If you already have a team or a firm you like, we deploy the platform into your stack and they run it with our support.

DayZero integrates with Plaid (banking), Stripe (payments), Shopify, Square, Ramp, HubSpot, Slack, and more, plus a migration connector for Xero and a migration and two-way sync connector for QuickBooks Online. ERP connectors for NetSuite and Sage Intacct plus Amazon are on the roadmap. You can request any integration and it directly shapes what we build next.

DayZero combines a connected accounting platform with accountants and engineers who can support your operation. Contracts, purchasing, inventory, cash planning, reporting and AI workflows share the same ledger. You keep access to the underlying records and can review the sources behind the work, whether your own team runs the platform or we help run it with you.