ŌSensei (formerly Sensei FinanceOS) · For Bookkeeping Firms
Bookkeeping capacity without another seat.
Your next bookkeeper is a bigger decision than the hourly rate suggests. Run your own numbers below — what one seat really costs per month, and what it returns in capacity. Then, if the math says what it usually says, there is another way to add capacity: a defined slice of your portfolio, on one fixed monthly plan, run on ŌSensei.
The Seat-Cost Calculator
What does one seat actually cost?
Loaded cost uses 1.25–1.40× the wage — a planning range for payroll taxes, benefits, software seats, and your time managing the seat. Your firm’s actual load differs. The point is the gap, not the decimal.
The wage, as posted
$4,333/mo
Wage × hours × 52 ÷ 12. The number in your head when you post the job.
The loaded seat
$5,417–$6,067/mo
$65,000–$72,800 a year — for one seat, which takes PTO, gets sick, and can resign in your busiest month.
Seat cost per client
$361–$404/client/mo
Before rent, before your review time, before profit. And capacity grows only one way: hire again.
Every new client takes another slice of a seat. When the seat is full, growth waits on recruiting.
The Alternative
A slice of your portfolio, on a fixed plan.
Defined slice
I take the bookkeeping portion for a set of your clients that we define together — one fixed monthly plan, no hourly billing, no seat to manage.
Run on ŌSensei
The close runs on a Finance Operating System I designed and built — an agent-led close, with the major workflows run by an agent I direct and review. The agent prepares. I review and approve.
Closed every month
Transactions categorized, accounts reconciled to the statement, a gated close that doesn’t pass until its proofs do, and a balance sheet and P&L per client, out on the same day.
Your clients stay yours
I work in the back office, under your name. No poaching, no side deals. Above the bookkeeping, a Controller layer is available: close oversight, review, and client-facing reporting.
Start with a small pilot — one slice of the portfolio. Price is fixed after a short scope review, exact before anyone commits. I’m JoMar Hester, founder of Sensei Advisors — 20+ years across public accounting, consulting, and industry, on QuickBooks Online for 8 years and QuickBooks Desktop for 15.
Your breakdown
Get these numbers in writing.
Send the form and I’ll reply personally with your seat-cost breakdown as a one-page document — your inputs, the loaded math, and what a fixed-plan slice would need to beat. No list, no sequence of follow-ups.
Prefer email? jomar@senseiadvisors.com
Please do not send bank credentials, tax IDs, payroll data, or other sensitive financial information through this form.