MyCase and LeanLaw: Running Case Management and Billing Side by Side

The firm picked MyCase a few years ago for good reasons. One subscription covered the case file, the calendar, and invoicing, and the price made sense for a practice that was still finding its shape. That’s a common path, and plenty of firms stay on it. The ones that start looking at MyCase and LeanLaw together tend to share a pattern: the case side still fits, and the money side has started asking for more. The managing partner wants to see who is billing what and what’s being collected. The bookkeeper wants invoices, payments, and trust activity to live in QuickBooks Online without a cleanup pass at month-end. Comp season is coming, and nobody wants to build the partner numbers in a spreadsheet again.

Keeping MyCase for the case and moving billing and accounting to LeanLaw is one answer. Here’s what that looks like in practice, starting with the limits.

What the MyCase and LeanLaw connection does, and its limits

The connection runs through Zapier, a third-party automation service. LeanLaw’s help article on connecting MyCase to LeanLaw using Zapier sets out the terms:

• It’s in beta. The LeanLaw Zapier app is not fully supported by LeanLaw’s support team.
• It has prerequisites. You need a LeanLaw account with API access (API access is on the Pro plan), a MyCase account, and a Zapier account.
• Your firm owns the setup. The Zaps live in your Zapier account, and mapping fields is part of building them.
• It creates clients and matters only. A new person or company in MyCase can create a LeanLaw client, and a new case can create a LeanLaw matter. Time does not come across. Hours are entered in LeanLaw.
• It runs one direction. Records move from MyCase into LeanLaw. Nothing flows back to MyCase.

Zapier has its own cost to account for. Its plans cap how many tasks run each month and how many steps a Zap can have. A firm that opens a handful of cases a month may never notice; a high-volume intake practice will, so check Zapier’s current pricing against your own numbers.

The time rule shapes everything else. With MyCase and LeanLaw side by side, timekeepers record their hours in the system that bills them. That’s a habit change for anyone used to logging time inside the case file, and it’s the first thing to settle with your attorneys.

Who owns what

Give each system one job and hold the line on it.

MyCase owns the case. People and companies, cases, documents, and the calendar stay in MyCase. That’s where the case team works.

LeanLaw owns the money. Time is entered in LeanLaw, and invoices are built there. LeanLaw is built on QuickBooks Online for law firms and runs on it as the financial source of truth, which means QuickBooks Online is required; invoices, payments, and trust transfers land in QuickBooks Online without re-entry. Real-time reporting on utilization, realization, and collections by matter and timekeeper sits on the LeanLaw side as well.

MyCase has its own QuickBooks Online integration, and MyCase’s support center lists invoices, payments, and trust deposits and withdrawals among the records it sends to QuickBooks Online. So the decision in front of you is where billing should happen: in the case system, with records sent on to QuickBooks Online, or in a billing system that runs on QuickBooks Online directly. If you’re still sorting out which tool does which job, this breakdown of case management, billing, and payment processing helps separate the three.

Setup notes for the MyCase to LeanLaw Zaps

The help article walks through two Zaps: one for clients and one for matters. A few decisions make the difference between a connection that runs quietly and one that needs weekly cleanup.

Pick one system to create clients and matters. If MyCase creates them, nobody should create them by hand in LeanLaw. Two front doors produce duplicate clients.

Map the three required matter fields. Every LeanLaw matter needs a client, a responsible user, and a matter type (hourly, flat, or contingency), chosen with dropdown pickers in the Zap. If you also send contacts, a lookup step can link each case to the right client. Note that a lookup step makes the Zap multi-step, which can require a paid Zapier plan.

Plan for matter type if you run more than one fee model. A fixed dropdown value applies to every case that comes through that Zap. A firm with hourly, flat fee, and contingency work needs a way to land each case on the right type, or someone needs to correct it in LeanLaw before time is recorded against it. Matter type decides how the work gets billed, so this is the field to get right.

Test what an edit does. The MyCase triggers listen for people, companies, and cases that are added or updated, while the LeanLaw actions create records. Before you go live, edit a test case in MyCase and confirm what appears in LeanLaw, so an address change doesn’t become a second client.

Name an owner. Someone at the firm checks Zapier for failed runs. With the app in beta and outside full LeanLaw support, that person is your first line.

Where the handoff lives day to day

Once it’s running, the day looks like this. Intake opens a case in MyCase. Within moments, the client and matter exist in LeanLaw (the article says the MyCase triggers fire instantly). Attorneys and paralegals do the case work in MyCase and record their time in LeanLaw against that matter. Billing runs from LeanLaw, and invoices and payments land in QuickBooks Online.

The friction shows up in the same three places:

• Time habits. Hours recorded anywhere other than LeanLaw don’t get billed. Make the rule explicit and check for it in the first few billing cycles.
• Changes after creation. The help article covers creation, so treat renamed cases, reassigned responsible attorneys, and changed billing contacts as edits someone makes in both places until you’ve tested otherwise.
• Money questions asked in MyCase. Billing and payment status lives in LeanLaw and QuickBooks Online. Point people there.

The payoff is matter setup that happens once. When the matter exists in LeanLaw on day one, time can be recorded against it on day one, and there’s less of it waiting for someone to create the matter so the hours have somewhere to land. That’s time that would otherwise never get entered, which shows up in utilization first and in what the firm can bill second.

When running both stops making sense

Two systems are a reasonable trade when each earns its place: MyCase because the case team depends on it, LeanLaw because billing and accounting on QuickBooks Online give the partners a clear view of what the firm billed against what it collected. The trade gets harder to defend when the handoff itself becomes the work. Signs to watch for: the Zaps fail often enough that someone is rebuilding clients by hand, attorneys keep recording time in the wrong place, or the firm is paying for features in both systems that nobody uses.

At that point, the honest move is to step back and pick one system of record for the money. Start with a side-by-side comparison of MyCase and LeanLaw, then weigh it against how LeanLaw and MyCase differ for your kind of firm. If you land on LeanLaw for the financial side, see how it works as legal accounting software for law firms. Either way, the question to answer is the one the managing partner cares about: which setup gets more of the firm’s recorded work billed and paid with the least handling in between.