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The whole CFO office, in one place.

Your numbers, ready before you need them. Humans in the loop.

Or pick a time on our calendar.

Watch it work
  • Audit trail on every AI action
  • Five days from pilot to first close review
  • Accountants and engineers on every engagement
Trusted by

Everything the close touches. In one place.

Bank lines match themselves to the ledger. Every match is scored, and anything uncertain waits for a person.

Explore bookkeeping

The DayZero app, playing sample data for Alpenglow, our demo company. Nothing here touches a live account.

Move faster on finance.

From bookkeeping to board meetings. Agents do the work. You approve.

A finance stack built around you

The monthly close, on a checklist

Expenses on your phoneEarly access

Manage collections with our agents

Subscription forecasting

Investor reporting

Sample data for Alpenglow, our demo company. Nothing here touches a live account.

Set up around how you work.

Drop in your SOP. We learn your books.

  • Close SOP.docx

Meet your finance team.

As many agents as you need. Message them like teammates.

  • Close June.
  • May collections?
  • Revenue mix by product?

Agents catch the unknowns.

When a number doesn't tie, they ask. Your answer becomes a rule.

Bill partly paidPayables
Bill $8,640.50Paid $8,215.00Open $425.50
Ask DanaMark paid

Design your own workbooks.

Your investor report, built from your ledger.

  • Add customer concentration.
  • Bank balances by month.
  • Cash burn and runway?

Every product. One ledger.

A few of them, all on one double-entry core.

See The Ledger

Nothing moves without you.

Agents prepare the work. People approve it. Everything is recorded.

You approve before it posts

Payments, transfers and entries wait for the right person. You see the exact rows before anything changes.

Bill 8812 · Pacific Pack$8,400.00 · three-way matchedNeeds approval

An audit trail on every action

Every change records who or what made it, when, and why. Your accountant and auditor see the same history.

  1. Payables Drafted bill 8812 from invoice-8812.pdfJun 30, 8:02 am · Matched PO-0412 and receipt RCV-0388
  2. Michelle Approved $8,400.00Jun 30, 9:14 am · Reviewed the lines against the PO
  3. Marco Reyes Reviewed the closeJul 1, 7:40 am · Ties to the bank statement

Our ledger, or keep QuickBooks

DayZero runs on its own double-entry ledger. Prefer QuickBooks? Keep it. Approved work syncs both ways as native records, and you keep full ownership.

Bill 8812 · native QuickBooks bill Attachment and approval carried acrossIn sync

Up and running in five days.From the start of your pilot to your first close review.

Book a free pilot

The numbers your board asks for, before they ask.

Our CFO advisory work runs on the live ledger — scorecards, variance narratives, lending packages, and the 13-week cash model are current the day the meeting is booked, not a week after the close. We stand behind the numbers in the room.

Financial Scorecards

Real-time KPI dashboards with revenue, margins, burn rate, and runway — auto-generated from your books.

Variance Analysis

AI explains every material variance: what changed, why, and whether it needs attention.

Lending & Fundraise Prep

Loan packages, debt schedules, and investor financials built from the live ledger.

Cash Flow Forecasting

13-week rolling forecasts built from actuals, AR aging, and AP schedules — refreshed as your data syncs.

Why we're called DayZero.

  1. Industry
    Day 15

    Books arrive two weeks late — already history.

  2. With software
    Day 5

    Automation compresses the close into the first week.

  3. With agents
    Day 1

    Reconciliation and reporting run overnight.

  4. DayZero
    Day 0

    Reconciliation and reporting stay current through the month.

Pilot. Deployment. Partnership.

PilotDays 1–5, free. Your books live on the ledger; the first close reviewed together on day five.DeploymentWeeks 2–6, typically. Integrations built, the first closes run alongside your team.PartnershipOngoing. The close every month — run by us, or by your team with us behind it.

The pilot is free, and our prices are public.

Book a free pilot See pricing

Asked, answered.

Both. AI agents do the repetitive work inside your accounts, and accountants on our team review it, own the close and answer your questions.
No. DayZero has its own ledger, but you can keep QuickBooks if you'd like: keep it connected and approved work syncs both ways as native QuickBooks records. If you'd rather move, DayZero has direct migration connectors for QuickBooks Online and Xero. Connect via OAuth and it imports your chart of accounts, customers, vendors, items, transactions and balances, finishing with an opening-balance journal entry and a trial-balance QA report. From other platforms you can migrate via CSV import, and our team can assist with larger migrations.
No. Bill payments, transfers and anything that posts to the books wait for a person to approve.
Most are. The pilot starts with a review of your current file, a list of what's wrong, and a cleanup before the first close.
A real accountant on our team. They review every close, approve anything that posts, and you can reach them by text, email or Slack.
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.
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'.
DayZero runs purpose-built accounting agents — 24 agents with 638 tools, every write audited — and our accountants review the close. Every agent action records its inputs, the source documents it referenced, the rule or match logic it applied and a confidence score, in an audit trail you can review or export. You set confidence thresholds so anything uncertain routes to a person for review. Nothing is a black box: your auditors and your CFO get the traceability they need to sign off.
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.

Start next month at zero.

A free pilot on your real books. We’ll show you what’s wrong with them, whether or not you keep us.

Or pick a time on our calendar.

We’re accountants and engineers. We built the software we always wanted to run books on — then we started running books on it.