Bill Every Client.
Every Retainer.
Every Engagement.
HR consultants juggle retainers, project fees, multi-client schedules, and expense pass-through — all at once. Billing powered by LeanLaw was built for exactly that complexity: capture time by engagement, invoice every client professionally, and sync everything to QuickBooks Online automatically so you get paid without the admin headache.
Retainer + project billing in one place
Time tracking by client and engagement
Expense pass-through with receipt capture
Sync with QuickBooks Online
Batch-invoice multiple clients at once
Accept ACH & credit card payments
Payment reminders & outstanding-balance tracking
Real results for HR and people-consulting practices
1,000+
law firms run on LeanLaw
70%
faster invoice collections
$61K
leaked revenue recovered per attorney each year
20–50×
ROI for a typical 10-attorney firm
Purpose-built for the way HR consultants bill.
HR and people-consulting work is inherently multi-client and multi-engagement: a retainer here, an org-design project there, travel expenses to pass through, and a dozen client relationships to keep straight. Billing powered by LeanLaw organizes all of it — time, expenses, and invoices — by client and engagement, so nothing slips through and your books stay clean.
Retainer Billing
Project-Fee Billing
Expense Pass-Through
Multi-Client Time Tracking
Batch Invoicing
Engagement-Level Reporting
Dynamic Dashboards
QuickBooks Online Sync
E-Payments Built In
Real-Time Cash Flow at a Glance
Updated live, synced with QuickBooks Online
Everything HR consultants need to bill every engagement with confidence.
From ongoing HR retainers to discrete people-strategy projects, Billing powered by LeanLaw handles every billing model your practice uses — with expense pass-through, multi-client time tracking, and QuickBooks sync built in.
One platform for every billing arrangement.
Bill a monthly HR advisory retainer and a one-off compensation-benchmarking project to the same client — or juggle six different clients each with their own arrangement. Billing powered by LeanLaw keeps every engagement separate, so time entries land in the right bucket and invoices are never mixed up.
Pass through every client expense with confidence.
Log travel, assessments, survey tools, and background-check fees directly against the client engagement that incurred them. Expenses appear as line items on the client invoice with optional receipts attached, giving clients full transparency and eliminating disputes over what was charged.
Track time across all clients without losing context.
Start a timer from your phone on the way to a client site, switch engagements mid-day from your laptop, and review the week in one dashboard. Every minute is attributed to the right client and engagement automatically — so billing day is a single click, not a manual rebuild.
Know exactly which clients and projects are profitable.
Engagement-level dashboards show billable hours, billed amounts, collected revenue, and outstanding balances for every client and project at a glance. Identify which retainers are under-utilized and which project scopes are overrunning — before they become a problem.
Easy Onboarding
Experience a smooth transition to LeanLaw with our guided setup process. We help you connect to QuickBooks Online, train your team, and effortlessly migrate your existing client and project data — so you are up and running quickly.
Invoice and Reporting
Transfer accounts receivable, migrate WIP data, and start invoicing with Billing powered by LeanLaw while entering time efficiently. Your entire billing history travels with you so there are no gaps in your records.
Business Intelligence at a Glance
Gain instant insights into your consulting firm health with real-time KPI dashboards. Track critical metrics — from billable hours to collection rates — allowing you to make informed decisions and continuously improve operations.
Set up in days. Billed from day one.
HR consultants cannot afford months of implementation overhead. Billing powered by LeanLaw is designed for rapid onboarding — our team handles the heavy lifting so your firm is billing and collecting without missing a beat.
What HR and people consultants say about Billing by LeanLaw.
HR advisors, workforce-planning consultants, and people-strategy firms share how Billing powered by LeanLaw simplified their client billing and helped them get paid faster.
"I don't know how my business functioned before Billing by LeanLaw. The customer service and support is amazing. The timekeeping features give you everything you need to manage tracking billable hours. That it is integrated with QuickBooks is an amazing feature."
Deborah W.
HR Consultant
"We run retainer and project billing simultaneously across a dozen clients. LeanLaw makes it effortless to split time by engagement, generate separate invoices, and pass through expenses — all synced to QuickBooks before I close my laptop."
Michelle R.
People Strategy Consultant
"Very easy and intuitive interface, excellent pricing. I don't need all the other functions other platforms have, and I don't like paying for them. I never found I used them or that they saved me any time."
Daniel Tucker Simmons
Owner, HR Advisory
"Tracking payments to specific matters was a nightmare before LeanLaw. Now everything syncs to QuickBooks automatically. We see invoices paid 70% faster."
Amanda Coughlan
Billing Coordinator, Zahn Law Group
"It has significantly reduced the time it takes to run billing each month and the timekeeping feature is very easy to use."
Tim Y.
Partner
"Exactly what you need as an add-on for QuickBooks to run your firm, produce invoices and firm productivity reports. Bravo!"
Jennifer
Partner
"We receive payments so quickly, thanks to the integrated payment processor. The funds go right into our account and update automatically."
Amanda Coughlan
Bookkeeper
Your accountant already uses QuickBooks Online. So does Billing by LeanLaw.
Billing powered by LeanLaw has a seamless, real-time, two-way sync with QuickBooks Online for all your key financial data — invoices, payments, and more. Your bookkeeper stays in QuickBooks while you bill in LeanLaw. No exports. No duplicate entry. No reconciliation headaches.
- Invoices post to QuickBooks Online the moment they are approved
- Payments sync instantly — no manual reconciliation needed
- Email invoices directly to clients from within the platform
- Accept ACH and credit card payments with built-in processing
- Send payment reminders and track outstanding balances automatically
See how HR consultants use Billing by LeanLaw to bill smarter.
Schedule your free demo and we will show you exactly how Billing powered by LeanLaw handles retainer and project billing side by side, passes expenses through to client invoices, and syncs everything to QuickBooks Online — so you can focus on your clients, not your billing stack.
Billing powered by LeanLaw is currently available to companies that use QuickBooks Online and have 1 to 4 users — with a straightforward onboarding fee and integrated payment processing through Confido.
HR consultant billing questions, answered.
Can I bill retainer and project fees to the same client at the same time?
Yes. Billing by LeanLaw lets you set up separate billing arrangements per engagement — a monthly HR retainer alongside discrete project fees for a compensation study or reorganization, for example. Each engagement tracks its own time, expenses, and invoicing independently, so clients always see a clean, accurate statement.
How does the platform handle expense pass-through for HR consultants?
You can log client-billable expenses — travel, assessments, background-check fees, survey tools — directly against any engagement. Expenses sync to QuickBooks Online and appear as line items on the client invoice, with optional receipts attached, so there is never a dispute about what was charged and why.
I work across multiple clients simultaneously. Can I track time by client and engagement without mixing things up?
Absolutely. Billing by LeanLaw is built for multi-client professionals. Each client and each engagement gets its own time bucket. You can start a timer from a mobile device, switch clients mid-day, and every minute lands in the right place. At billing time, you batch-invoice all clients in one pass rather than rebuilding invoices manually.
Does Billing by LeanLaw support HR consulting workflows like workforce planning or talent projects?
Yes. Whether you bill by the hour for an executive search, on a fixed fee for a compensation benchmarking project, or on retainer for ongoing HR advisory, the platform handles all of those models. You define the billing arrangement per engagement, and the platform enforces it consistently across time entries and invoices.
My bookkeeper handles QuickBooks — will this create extra work for them?
No — it will actually reduce their workload. Billing by LeanLaw has a seamless, real-time, two-way sync with QuickBooks Online. Invoices post automatically when approved, payments sync the moment they clear, and every transaction appears in QuickBooks without any manual export or data entry. Your bookkeeper stays in QuickBooks as usual; LeanLaw keeps it current.
What size HR consulting practice is Billing by LeanLaw right for?
Billing by LeanLaw is currently available to practices that use QuickBooks Online and have 1 to 4 users — making it ideal for solo HR consultants, boutique people-consulting firms, and small HR advisory teams that need professional billing without enterprise-software complexity or cost.