For fractional operators & finance leaders
Run your practice.
Engagement by engagement.
You are a fractional COO, CFO, or bookkeeper with several customers at once. Wrenbase runs your practice: bill each engagement, track the money in and out, and keep a clean ledger per customer, all in one place.
Your practice
3 engagements · March
Meridian Consulting
Retainer · monthly
$8,000
Paid
Northwind SaaS
Hourly · March
$3,250
Sent
Harborline Co
Project fee
$5,500
Draft
Each customer, its own clean record.
Billed
$16,750
Your practice, structured
Several customers. One clean place to bill them all.
One practice, several engagements
Each customer you run is its own engagement with its own retainer, its own invoices, and its own clean record. No re-keying between them.
Bill the way each customer agreed
Monthly retainer for one, hourly for another, a flat project fee for a third. Set the cadence per engagement and it sends itself.
A ledger you can hand over
Every invoice, payment, and vendor bill is logged per engagement. When you wrap or hand off, the record is already clean.
Your practice · 4 engagements
This monthSilverpeak Group
Retainer · monthly
$8,000
PaidHarborline Co
Hourly · this month
$4,200
SentMeridian Consulting
Project fee · phase 2
$12,500
SentRivendell Systems
Retainer · monthly
$6,500
OverdueBilled this month
$31,200
Straight about scope
What Wrenbase does for you today.
Today Wrenbase runs your practice: your engagements, your billing, your ledger. Each customer is a clean, separate record you can bill on its own terms and hand over when the work wraps.
Running money inside each customer's own books, as if you were their finance team on their platform, is something we are building toward. We will say so clearly here when it is ready. For now, if you bill customers for fractional work, this is built for you.
Your words, in Wrenbase
You run other people's money. Per client.
You keep the words you already use for each client you run. They map onto the ledger objects that keep every client's numbers clean and separate.
| In your practice | In Wrenbase | What it drives |
|---|---|---|
| Each client business you run | Organization / customer context | One clean, separate record per client |
| Their engagement with you | Project | Its own live P&L: billed, collected, spent, margin |
| The vendors your client pays | Vendors | Bills in, screened, counted against that client |
| Their approvals | Approval rules | Who signs off before money leaves, per client |
| Client's numbers you report on | Cash Pulse | Each client's position, read live per client |
Cash Pulse
Report each client's position at a glance.
When a client asks where they stand, you should not be rebuilding a spreadsheet. Cash Pulse reads each engagement live: what came in, what went out, what is owed, and the margin you are running per client.
Know the margin on every client without stitching numbers together the night before the call.
See Cash Pulse →Cash Pulse · per client
4 engagements · this quarter
Meridian Consulting
Retainer · monthly
62%
margin
+$4,900
net
Northwind SaaS
Hourly · to date
48%
margin
+$1,560
net
Harborline Co
Project fee
31%
margin
+$1,700
net
Silverpeak Group
Retainer · monthly
18%
margin
−$320
net
One client running thin. You see it before they ask.
Practice net
+$7,840
Beside the books you keep
Keep running each client's stack. Run your own practice here.
You already live in your clients' accounting and finance tools. Wrenbase does not replace them. It is where you run your own practice: the engagements you bill, the ledger of what each client owes you, and the margin you make per client.
The books you keep for clients
Stay exactly where they are. Wrenbase does not touch them.
Plus Wrenbase, for your practice
Bill each client on its own terms, track what every engagement is owed, and read the margin you run per client, all in one place separate from their books.
Nothing to connect. Bring history in by CSV import, live now.
Built for
Operators who run several engagements at once.
Projects · Per client engagement
Know what each engagement actually made.
Each engagement is a project with its own live P&L: what you billed, what you collected, and any costs passed through, per customer.
Meridian rollout · Overview
on trackProfit margin
60%
Outstanding
$1,000
Budget
$14.6k left
Cash timeline, next 6 weeks
Weeks 1-2 run cash-negative before Meridian's payment lands in week 3. Consider nudging invoice #4.
Common questions
What fractional operators ask.
- How does Wrenbase fit a fractional practice?
- You run a practice with several customers. Each customer is an engagement with its own fee, invoices, and ledger. Wrenbase gives you one place to bill every engagement, track what came in and what went out, and keep a clean record per customer, instead of a spreadsheet per customer.
- Can I bill different customers on different terms?
- Yes. One engagement is a monthly retainer, another is hourly, another is a flat project fee. Set the mode and schedule per engagement. Recurring invoices send themselves; reminders escalate in your tone if a customer runs late.
- Do I get a separate view per customer?
- Yes. Each engagement is a project with its own live P&L: what you billed, what you collected, and any costs you passed through. Roll them up to see the whole practice, or drill into one customer.
- Can Wrenbase run the books inside my customers' own companies?
- Today Wrenbase runs your practice: your engagements, your billing, your ledger. Running money inside each customer's own books is something we are building toward, and we will say so clearly here when it is ready. For now, if you bill customers for fractional work, that is exactly what fits.
- Can I bring my current customer list in?
- Yes. Wrenbase imports customers, invoices, and transactions from CSV, so a practice you run on spreadsheets today moves across cleanly.
Bill every engagement from one practice.
Start free. Add your first customer and set its terms in minutes.