Decision to Go-Live
What switching your firm’s billing system actually takes
Most firms know their billing system doesn’t fit. They stay anyway — because nobody can tell them what changing it actually involves. This session tells you: the real timeline, who does the work, and the three places firms lose weeks.
- Date
- Thu, Sep 10, 2026
- Time
- 11:00 AM MT
- 10:00 PT · 1:00 ET
- Length
- 50 minutes
- 15 min live Q&A
Jonathon Fishman
Co-founder & CEO, LeanLaw
Brandon Zobel
Founder & CEO, ProsperSpark
Save your seat
FreeThursday, September 10 · 11:00 AM MT / 10:00 AM PT / 1:00 PM ET · 50 minutes · Recording sent to everyone who registers
Note: There’s no sales call attached to registering. But LeanLaw and ProsperSpark are co-hosting this session. By registering, you agree that both companies may share your registration details and contact you about it. See our privacy policy.
Can’t make it live? Register anyway — we’ll send you the recording.
Four things, specifically.
Enough to make the case internally — a timeline, an owner for every step, a number on what staying costs, and the questions to put to any vendor.
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A timeline you can put in front of your partners
Week by week, from the day you decide to the day you bill out of the new system.
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A clear split of who does what
What your team owns, what implementation partners own, and the handoffs where firms typically stall.
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The honest cost of staying
How to put a number on the unbilled time, aging AR, and rework your current setup produces every month — so the comparison is real instead of vague.
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The questions to ask any vendor before you sign
Including the ones we’d rather you didn’t ask us.
We’d rather tell you the hard part up front
Switching billing systems is the change firms postpone longest, and the reason is rational: the downside is easy to picture and the upside isn’t. Nobody wants to explain to partners why invoices went out late in the month they changed platforms.
So this isn’t a product tour. It’s the implementation conversation — including where it gets difficult. Jonathon covers what a switch costs a firm in real terms, and how LeanLaw is built around the way law firms actually bill. Brandon covers what implementation looks like on the ground, having built the practice that runs it for firms moving onto LeanLaw, and how the work fits with the systems you already run rather than replacing them.
That last part matters more than it sounds. Firms shopping for a billing system usually think they want one tool that does everything. What they actually want is one experience — onboarding through collections, without data falling out between steps and without someone on staff holding it together by hand. Consolidating tools and making them cohere are different problems. We’ll be direct about which one we solve.
What we’ll cover
Where firms get stuck
Why the decision stalls, what staying on a system that doesn’t fit costs per month, and what change management realistically looks like at your firm’s size.
What the switch involves
How LeanLaw is built around the way law firms bill rather than adapted to it, and why one coherent experience beats one tool that claims everything. Then what implementation looks like week to week, what makes it hold after the first billing cycle, and how the work fits alongside the systems you already run. We close with the timeline itself, dependencies named.
Your questions
Open Q&A with both teams. Bring the specific ones. We’ll also cover what’s available to firms who decide to move after this session.
Firms already past the “should we?”
Managing partners, firm administrators, and operations leads at firms who have already concluded their current billing setup isn’t working — and need to know what changing it involves before they can make the case internally.
If you’re earlier than that and still building the argument, the first ten minutes are for you.
One from each side of the work
Jonathon Fishman
Co-founder & CEO, LeanLaw
Jonathon works with firms on Legal Revenue Operations — the operating model connecting how work gets tracked, billed, and collected. He’ll cover what a switch costs a firm in real terms, what it returns, and how LeanLaw is built around the way law firms actually bill.
Brandon Zobel
Founder & CEO, ProsperSpark
Brandon has spent 17+ years leading teams across every level of a business, from frontline staff to sales executives, before founding ProsperSpark in 2018 and taking on its LeanLaw implementations. He’ll cover what implementation looks like week to week, and what makes it hold after the first billing cycle.
The cost of staying is real. It’s just quiet.
Unbilled time that ages out. Invoices that go out late because the process depends on one person remembering. AR that sits because nobody can see it clearly. None of it shows up as a line item, which is exactly why it persists.
Bring your questions on September 10.
Co-hosted · Recording sent to every registrant