LeanLaw vs TimeSolv for Small Law Firms: 3-Way Breakdown 2026

Billing software is one of the highest-leverage decisions a small law firm makes. Every minute of attorney time that goes uncaptured is revenue that never appears on an invoice — and the average firm loses a meaningful share of billable work to poor time-tracking habits before any billing software comparison even begins.

The US legal services industry generated more than $360 billion in revenue, according to Bloomberg Law industry analysis 2025. Within that market, solo practitioners and small firms with 2-10 attorneys represent the majority of practices — and they face the sharpest billing discipline challenge because there's no billing department catching leakage.

LeanLaw and TimeSolv are the two most commonly compared billing platforms in the small firm segment. This breakdown adds BillQuick Legal as a third option to capture the mid-market tier, then maps each to the firm profile it fits best.

TL;DR: LeanLaw wins on QuickBooks integration depth. TimeSolv wins on standalone billing features and flat-fee matter handling. BillQuick Legal wins for firms that need project management alongside billing. The right choice depends on whether your firm runs QuickBooks or not.

Key Takeaways

• The average small firm attorney loses 1.5-2.0 hours of billable time daily to poor time-capture habits — software selection directly affects revenue recovery

• LeanLaw is built as a QuickBooks extension; firms not on QuickBooks should look elsewhere

• TimeSolv's flat-fee billing module is the best-in-class option for fixed-fee practices

• BillQuick Legal is the strongest choice for firms that bill across project phases

• US legal services revenue: $360B+, according to Bloomberg Law industry analysis 2025

• Running billing software alongside an intake and follow-up automation layer closes the most common revenue gap in small firms

Who This Is For

This comparison is written for:

• Solo attorneys and small firms (1-15 attorneys) managing their own billing and collections

• Firm administrators evaluating billing software at a practice with existing QuickBooks or without

• Growing practices that have outgrown spreadsheet invoicing and basic tools like FreshBooks

Red flags: Skip this comparison if your firm uses a full practice management platform (Clio, MyCase, PracticePanther) that already includes integrated billing — those platforms' billing modules are purpose-built for the legal workflow and rarely need to be replaced with a standalone tool. Also skip if you bill exclusively through a single client portal that handles invoicing on your behalf.

The Billing Leakage Problem

Most small firm attorneys don't think of unbilled time as a loss — it's invisible. The entry never gets made, the conversation never gets tracked, and the invoice goes out light. Multiply that across 10 attorneys for a year and the number becomes material.

According to the Clio 2025 Legal Trends Report, attorneys at small firms capture a significantly lower percentage of available billable hours than attorneys at larger practices, partly because small firms lack the administrative infrastructure that reminds timekeepers to log.

The right billing software addresses this through features like: mobile time capture, browser-based timers, email-to-time-entry conversion, and end-of-day billing reminders. Each platform on this list approaches the capture problem differently.

Average billable hours actually captured per attorney: well below theoretical capacity at most firms, according to the Clio 2025 Legal Trends Report — this is the gap billing software is designed to close.

LeanLaw

LeanLaw is built specifically as a legal billing layer on top of QuickBooks Online. Firms that already live in QuickBooks benefit from native two-way sync: client records, matter codes, invoices, and payments move between LeanLaw and QuickBooks without manual export.

Core features: Time entry (web + mobile), UTBMS/ABA task codes, trust accounting (IOLTA), origination tracking, QuickBooks real-time sync, split billing for co-counsel matters, client billing portals.

What LeanLaw does well:

• QuickBooks integration is genuinely native — not an API connector running nightly. Changes sync in real time.

• Origination tracking lets the firm auto-calculate rainmaker compensation based on billed revenue

• IOLTA trust accounting is built in and compliant across most US state bar requirements

Where LeanLaw is weaker:

• If you're not on QuickBooks, the platform has limited standalone value

• Reporting depth is thinner than TimeSolv's for firms needing detailed billing analytics

• Flat-fee matter handling requires workarounds

Pricing (2026): $45-$65/user/month depending on plan. QuickBooks Online subscription required separately ($50-$90+/month for the firm account).

Fits: Firms already on QuickBooks Online, especially those that value accounting accuracy and origination tracking.

TimeSolv

TimeSolv is a standalone legal billing platform with 25+ years in the market. Unlike LeanLaw, it doesn't require QuickBooks — it has its own accounting layer and also integrates with QuickBooks if needed. This makes it the default choice for firms that haven't standardized on QuickBooks or that prefer to keep billing and accounting separate.

Core features: Time and expense tracking (web + mobile + desktop), flat-fee billing, contingency billing, batch billing, retainer management, trust accounting, document management, QuickBooks and Xero integration, budget-to-actual reporting.

What TimeSolv does well:

• Flat-fee billing is first-class: you can set a fixed matter budget, track time against it internally, and bill the flat fee without creating reconciliation confusion

• Budget-to-actual reporting lets partners see which matter types are profitable and which consistently run over

• No dependency on QuickBooks — the platform functions independently and integrates if you want it to

Where TimeSolv is weaker:

• No practice management features — it's billing-only, so intake, calendaring, and client communication require a separate tool

• The interface is functional but less modern than some competitors

• Mobile app is less polished than LeanLaw's for quick time entry on the go

Pricing (2026): $39.95-$59.95/user/month depending on plan.

Fits: Firms doing a mix of hourly and flat-fee work, practices not on QuickBooks, and firms that want detailed billing analytics.

BillQuick Legal

BillQuick Legal (BQLE) is the legal-specific edition of BQE Core, a project management and billing platform that spans multiple professional service verticals. For law firms that bill across project phases — think large transactional matters, litigation with distinct phases, or contingency cases tracked by stage — BillQuick's project billing structure is more flexible than either LeanLaw or TimeSolv.

Core features: Phase/task-based billing, project profitability by phase, time and expense capture, invoicing, QuickBooks and Sage sync, employee utilization reporting, client portal.

What BillQuick Legal does well:

• Phase-based billing is the strongest in this comparison — you can bill a litigation matter across Discovery, Motions, Trial Prep, and Trial as separate billing phases with separate budgets

• Employee utilization and realization reporting gives managing partners visibility into who is billing at what rate of their available capacity

• Integration with Sage 50 and Sage 300, which covers firms that use Sage for accounting

Where BillQuick Legal is weaker:

• Learning curve is steeper than the other two — the project management framework adds configuration overhead before billing starts

• Trust accounting module is less mature than LeanLaw's or TimeSolv's for IOLTA compliance

• Overkill for firms that do straightforward hourly billing with no phase structure

Pricing (2026): $47-$79/user/month.

Fits: Transactional and litigation firms that structure matters by phase, and firms needing utilization reporting alongside billing.

3-Way Comparison Table

Pricing Breakdown

Note: All figures exclude QuickBooks Online cost for LeanLaw users ($50-$90+/month), which makes LeanLaw's effective cost higher for small teams.

Worked Example: TimeSolv for a 4-Attorney Litigation Firm

Consider a 4-attorney litigation firm billing $1.2M annually, with 2 partners and 2 associates. Before TimeSolv, the firm used a spreadsheet to track time and generated invoices in Word. The billing partner spent 12 hours monthly reconciling time entries and generating invoices.

After implementing TimeSolv, each attorney uses the web timer to log time as matter_time_entry events directly to client matters throughout the day. The billing partner runs batch invoicing on the 1st and 15th — generating and sending all open invoices for active matters in under 2 hours. Monthly billing overhead drops from 12 hours to 2 hours, recovering $700/month in partner time at $350/hour. TimeSolv's 4-user subscription at $159.80/month has a payback period of under 30 days.

The flat-fee billing module additionally allowed the firm to set fixed fees for 8 family law matters running concurrently — tracking internal time against the budget without confusing clients with hourly invoices.

Time Capture Benchmarks: What Better Billing Software Is Worth

The financial case for switching billing platforms centers on billable hour recovery. According to the Clio 2025 Legal Trends Report and ABA 2024 Legal Technology Survey Report:

Attorneys using real-time mobile timers capture 64% more billable hours daily than those relying on memory-based entry — a $37,800 annual difference per attorney at $300/hour.

Collections Performance: Invoice Follow-Up by Automation Level

Billing software selection also affects collections speed. According to the ABA 2024 Legal Technology Survey Report, firms using automated payment reminders collect significantly faster than those relying on manual follow-up:

Firms with automated invoice reminders and online payment portals collect 62% faster than those relying on attorney-led follow-up calls.

Where US Tech Automations Fits

Billing software captures the work that's already been done. What it doesn't do is reduce the intake-to-billing lag, follow up on unpaid invoices, or remind clients to renew retainers. Those gaps live between the billing platform and the firm's communication layer.

US Tech Automations connects your billing platform's invoice status (using the TimeSolv or LeanLaw API) to an automated follow-up sequence. When an invoice ages past 30 days without payment, the orchestration layer sends a polite payment reminder — from the firm's email domain, with the invoice attached. When a retainer falls below a threshold, the workflow notifies the attorney and sends the client a replenishment request. The data extraction agent can also pull billable time from email threads and document metadata that attorneys failed to log, presenting them for review and one-click entry.

Firms that run this kind of follow-up automation collect materially faster than those relying on attorneys to remember. According to the ABA 2024 Legal Technology Survey Report, a majority of small firm attorneys report collections as a top operational pain point — not billing itself, but the gap between invoice sent and payment received.

When NOT to use US Tech Automations: If your firm is under 3 attorneys and your billing volume is under 50 invoices per month, the manual follow-up overhead is manageable without automation. The orchestration layer makes economic sense when invoice follow-up is taking an associate or administrator more than 3-4 hours per month.

Decision Checklist: Which Platform is Right for Your Firm?

Use this checklist to narrow your choice:

• Does your firm currently use QuickBooks Online? → If yes, LeanLaw is the natural fit
• Does your firm do a significant share of flat-fee work? → If yes, TimeSolv leads
• Does your firm bill matters in distinct phases (discovery, motions, trial)? → If yes, BillQuick Legal
• Does your firm need origination credit tracking for compensation? → LeanLaw only
• Does your firm need Sage accounting integration? → BillQuick Legal
• Is your priority the lowest per-user cost? → TimeSolv at $39.95/user

Common Mistakes in Legal Billing Software Selection

Mistake 1: Choosing based on feature lists instead of workflow fit. A platform with 50 features that don't match how your firm bills is harder to use than one with 20 that fit perfectly. Map your most common billing scenarios first.

Mistake 2: Ignoring the QuickBooks dependency in LeanLaw's pricing. The $45/user/month price looks competitive until you add QuickBooks Online ($50-$90+/month). For a solo attorney, the effective cost is $95-$155/month.

Mistake 3: Skipping trust accounting verification. IOLTA compliance requirements vary by state bar. Before implementing any platform, confirm it meets your state's specific trust accounting rules for three-way reconciliation.

Mistake 4: Not piloting time capture with actual attorneys. The best billing software fails if attorneys don't log time. Run a 30-day pilot with your actual timekeepers before committing — adoption is the most important success factor.

FAQ

Is LeanLaw or TimeSolv better for a solo attorney?

For a solo attorney on QuickBooks, LeanLaw at $45/month is strong if accounting integration is a priority. For a solo not on QuickBooks, TimeSolv at $39.95/month with its standalone accounting layer is usually the better fit. Cost difference is modest at one user.

Does TimeSolv have a mobile app for time entry?

Yes. TimeSolv has iOS and Android apps with timer functionality and offline time entry. Mobile time capture is a core feature of all three platforms on this list.

Can LeanLaw handle contingency billing?

LeanLaw tracks time on contingency matters for internal visibility but generates invoices when the matter resolves — not during the case. The platform supports contingency matter setup, but it's not as robust as TimeSolv's contingency billing module.

How long does migration take from spreadsheet billing to dedicated software?

For a firm under 10 attorneys with clean spreadsheet records, migration to any of these platforms typically takes 2-4 weeks: data import, client/matter setup, and attorney training. TimeSolv and LeanLaw both offer onboarding assistance.

Does BillQuick Legal integrate with Clio or MyCase?

BillQuick Legal does not offer native two-way integration with Clio or MyCase. If your firm uses either practice management platform, TimeSolv's broader integration ecosystem is a better fit.

What happens to trust account records if I switch billing software?

Trust account transaction history should be exported from your current system and imported into the new platform before going live. All three platforms support trust account data import. Confirm three-way reconciliation from the first month on the new system.

According to the ABA 2024 Legal Technology Survey Report, attorneys at firms that use dedicated time-tracking tools capture significantly more billable hours than those relying on memory-based entry. According to Bloomberg Law industry analysis 2025, the US legal services market has continued to concentrate revenue among firms with the most efficient operations.

The billing platform you choose shapes every attorney's daily workflow. Getting it right means fewer hours lost to administrative overhead and more revenue reaching the invoice.

Get benchmarks. See how the automation layer that connects billing to collections and intake to matter open works at ustechautomations.com/ai-agents/data-extraction.

Related reading:

• Law firm retainer tracking automation

• Legal conflict of interest checks automation

• LawPay payments to Clio matters automation