Bookkeeping firms
The monthly bookkeeping fee is fixed; the hours behind it aren't. Timix.AI tracks time per client, burns the fixed-fee budget down live, and prices the work against each bookkeeper's cost — so you can finally see which fixed-fee clients earn their keep and which quietly run at a loss.
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Illustrative entries
01 The problem
Fixed-fee bookkeeping only makes money if the hours stay inside the price. The clients that slip are rarely the ones you'd guess — and you find out a year too late.
The monthly fee is fixed; the queries, the catch-ups, the year-end scramble aren't. Without a budget burning down, the fee gets eaten by hours nobody was counting.
Junior and senior hours cost very differently, but if cost isn't separated, the per-client realization is a feeling, not a number — and the price stays wrong.
The 15-minute fix that's "not worth a timesheet entry" is exactly where fixed-fee margin slips away, one client at a time.
02 How Timix.AI fits
Timix.AI isn't your ledger — it's the time-and-margin layer that tells you whether each fixed fee was priced right, and feeds the bill you raise in your accounting software.
Set the monthly or annual fee as a Fixed Price budget; soft and hard limits and alert thresholds warn before a fixed-fee client tips into a write-off.
Fixed Price budgets with soft/hard limits + alert thresholds at project/task/subtask.
Customer rate and cost rate price every hour, so profit and margin roll up per client; cost rates are dated, so a pay review doesn't rewrite last year's job cost.
Dual rates → margin rollups; effective-dated cost-rate history.
Draft → Submitted → Approved gives you a tidy record; Customer Billing and Unbilled Time reports export to PDF/CSV for the invoice you raise in your accounting tool.
Approval workflow + Customer Billing / Unbilled Time → PDF/CSV.
Client → engagement → task with auto-SubTask, a week grid, Copy Last Week, and Timix.AI sentence logging keep the small jobs from going unlogged.
4-level hierarchy + auto-SubTask; week grid, Copy Last Week; Timix.AI logs by sentence (Starter+).
03 Try it on your own clients
Create a workspace, bulk-import clients from CSV, set the fixed fee as a budget and each bookkeeper's cost rate, and read margin per client on your own numbers. Full access, 90 days, no card.
90-day free trial, full access, no credit card.
Want to look around first? Pre-seeded IT-services, law-firm and construction demo workspaces are open to everyone and show budgets and per-client margin on realistic data. Open the IT-services demo
04 FAQ
No — there are no named accounting integrations. (A key-authenticated Integration API is available on Professional+.) Timix.AI is the time-and-margin layer that runs alongside your ledger: you export billing-ready hours and post the bill where you already do.
Yes — on Professional and up, Timix.AI generates commercial invoices from tracked hours, though it isn't a full ledger or accounting system. For your books and country-specific tax compliance, export clean, approved Customer Billing and Unbilled Time data (PDF/CSV) or sync it to your accounting software.
Set the fee as a Fixed Price budget and each bookkeeper's cost rate; Timix.AI rolls revenue, cost, and margin up per client, so the clients running over their fee surface before renewal, not at year-end.
That's the design goal — a week grid, Copy Last Week, and Timix.AI sentence logging ("log 20 minutes on the Smith Ltd month-end") make the small recurring jobs quick enough to actually record. Timix.AI is Starter+.
Ready when you are
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