Accounting
Books is bookkeeping software for small and medium organizations anywhere. In the United States it also connects bank and card accounts automatically, runs payroll, seeds sales tax by state, and reports 1099 vendors. Everything else on this page - the ledger, the reconciliation workpaper, the close, the reports, your AI over MCP - is the same wherever you are.
Outside the United States? Everything here works except the automatic feed and payroll - see the Any country page for what happens instead. Pricing is the same on both.
No card required. Sign-up takes 60 seconds.
AI does the heavy lifting
The assistant is now built into Books: a chat panel inside the app, with multiple chats and history like ChatGPT or Claude. It answers from the live ledger - trial balance, balance sheet, P&L, AR/AP aging, account activity - reads the documents you attach or pick from the library, and does the work: journal entries, bank-feed categorization and matching, bank reconciliations, invoice and bill drafts. Every posting stops at an in-chat approval card first, and you pick the model per chat - Gemini, Claude, GPT, or an open model - on every plan. Prefer the assistant your firm already licenses? Connect Google Antigravity, Claude, ChatGPT, or Gemini Spark over MCP and it works the same tools through the same approval gates and the same audit trail. Either way: AI prepares, you approve and post, and a reconciliation is signed by a person or not at all. External AI availability depends on the provider; Gemini Spark eligibility requirements apply.
A typical flow
Bots do the repetitive work; a person reviews and signs off wherever judgement matters.
What you get
A chat panel inside the app that answers from the live ledger, reads your documents, and drafts the work - journal entries, categorizations, reconciliations, invoices, bills - with every posting stopping at an approval card. AI is included with any subscription; every plan can use every model - Gemini, Claude, GPT, and open models. Not United States specific - it works the same everywhere.
Connect bank and credit card accounts once and transactions arrive on their own. The feed runs on Plaid and Books asks it for United States institutions, so this is the one country where the connection is automatic. Elsewhere you upload the statement and reconcile from that.
Payroll processing runs inside the same workspace as the ledger, so payroll journals are not stitched back in afterwards. This is United States only today. Payroll for other countries is being built.
Choose your primary state in setup and the sales tax accounts and rates are seeded for it. The vendor 1099 summary report tracks who crosses the threshold. Both are United States constructs and neither pretends to be anything else.
Create invoices, track customer balances, capture vendor bills, and monitor aging so cash flow questions are easier to answer. Not United States specific - it works the same everywhere.
Post journal entries, reconcile the accounts on a derived workpaper, prepare the reports, and leave a review trail for the people responsible for the books.
Prepare trial balance data and adjustments in a format that makes review and audit work easier when the organization needs assurance services.
Pricing
Every plan includes a 5-day free trial - no card required up front. Pick the plan that matches your team today, then add the modules, countries, and workflows you need as you grow.
AI for the built-in Books Assistant is included with any app subscription, and every plan can use every model - Gemini, Claude, GPT, and open models. Need more: AI Core is $39/month (400 credits/week), AI Advanced is $129/month (1,400 credits/week), and pay-as-you-go is $10 for 250 credits, valid 12 months. Your AI over MCP is included on every plan, on both Books and AttestWork - connect Claude, ChatGPT, Gemini Spark, or Antigravity straight to your books. Additional users are $10/user/month or $100/user/year on any paid plan.
For one business, nonprofit, or sole proprietorship. $290/year (two months free). Extra users are $10/user/month or $100/user/year.
For bookkeepers, CAS firms, and growing organizations. $590/year (two months free). Extra users are $10/user/month or $100/user/year.
For teams that want a second set of eyes before the period is closed. $1,990/year (two months free). Extra users are $10/user/month or $100/user/year.
Monthly only. For organizations under $1,000,000 in total revenue - above that, email hello@workpaperos.com for custom pricing. Extra users are $10/user/month or $100/user/year.
FAQ
Sign up in 60 seconds. Your 5-day trial starts the moment you land in Books in the United States.