Solo attorneys lose money every month they don't bill for — not because they don't work hard enough, but because manual time capture, disconnected invoicing tools, and trust accounting spreadsheets let billable minutes evaporate. Industry benchmarking from Clio's own Legal Trends Report has put attorney utilization (billable hours actually invoiced) below 3 hours a day for years running, and for a solo practitioner without a billing coordinator, every one of those lost minutes comes straight out of take-home revenue. The right billing software doesn't just generate invoices — it captures time automatically, keeps trust accounting compliant with state bar rules, and gets clients to pay faster.
Solo attorneys lose money every month they don't bill for — not because they don't work hard enough, but because manual time capture, disconnected invoicing tools, and trust accounting spreadsheets let billable minutes evaporate. Industry benchmarking from Clio's own Legal Trends Report has put attorney utilization (billable hours actually invoiced) below 3 hours a day for years running, and for a solo practitioner without a billing coordinator, every one of those lost minutes comes straight out of take-home revenue. The right billing software doesn't just generate invoices — it captures time automatically, keeps trust accounting compliant with state bar rules, and gets clients to pay faster.
For this guide we evaluated three platforms that solo attorneys ask about most often: TimeSolv, Bill4Time, and Clio. All three have been in the legal-specific billing space for over a decade, all three support IOLTA-compliant trust accounting, and all three offer free trials — which is where our evaluation started. We ran each platform through a common solo-practice workflow (time entry via timer and manual entry, split billing across a matter, trust deposit and application, invoice generation and client payment), checked published pricing against what a single-user account actually costs at checkout, and read through recent user reviews on G2 and Capterra to weigh in real complaints, not just marketing claims.
We did not evaluate these as general case-management suites, even though one of them (Clio) is far more than a billing tool. The lens throughout is specifically: how well does this software handle the mechanics of tracking time, billing it, and getting paid, for an attorney running a practice alone.
How We Evaluated
Pricing and contract terms. Solo practitioners are price-sensitive by definition — there's no firm absorbing the cost across ten timekeepers. We weighed published per-user monthly pricing, whether annual commitment is required to get the advertised rate, and whether trust accounting or LEDES billing sit behind a paywalled upgrade tier.
Time-capture and billing depth. A billing tool is only as good as how little friction it takes to record time. We looked at timers, mobile time entry, automatic activity capture, flat-fee and contingency billing support, and how granular the invoice customization gets (split billing, batch invoicing, evergreen retainers).
Trust accounting compliance. Mishandling IOLTA funds is a bar complaint waiting to happen. We checked whether three-way reconciliation, per-client trust ledgers, and overdraft prevention are built in or require a costly add-on.
Ease of use and setup time. A solo attorney doesn't have an IT department. We weighed how long it took to get from signup to a sent invoice, and how much the interface assumes prior practice-management software experience.
Customer support. We checked support channel availability (phone, chat, email), advertised response times, and whether onboarding help is included or sold separately.
Integrations. Most solos already use QuickBooks, a payment processor, and possibly a document tool. We checked native integrations versus Zapier-only workarounds, and whether payment processing carries its own separate fee structure.
Our Picks
#1: Clio
Clio Manage is the market leader in legal practice management, and billing is one of its strongest modules rather than a bolt-on. Time entries flow directly from matters, calendar events, and even emails logged against a case, so a solo attorney working inside Clio for case management captures billable time almost as a byproduct of normal work rather than a separate task. Trust accounting is native, with three-way reconciliation and per-matter ledgers built to satisfy IOLTA requirements in all 50 states, and LEDES billing formats are supported for attorneys who take insurance defense work.
Pricing starts at the EasyStart tier, which is billing- and calendar-only and priced lowest but caps out fast for anyone doing real case management. Solo practitioners who want the trust accounting and billing depth described above need at least the Essentials tier, which runs roughly $79/user/month billed annually (higher month-to-month), with Advanced and Complete tiers above that unlocking custom fields, advanced reporting, and client intake automation. Payment processing runs through Clio Payments, which charges its own per-transaction fee on top of the subscription — worth budgeting for since most solos will use it for client credit card payments.
The tradeoff is that you're paying for a full practice management suite even if billing is the only thing you need. The interface has a learning curve that a dedicated billing-only tool doesn't, and some long-time users report that recent UI changes made frequently-used billing screens more clicks away than in older versions. For a solo attorney who's going to use Clio for matters, contacts, and documents anyway, the billing module is excellent value bundled in. For someone who just wants to log time and send invoices, it's more tool than necessary.
- Time capture flows automatically from calendar events, emails, and matter activity
- Native IOLTA-compliant trust accounting with three-way reconciliation
- Largest integration ecosystem of the three (QuickBooks, Outlook, Dropbox, dozens more)
- Mobile app is fully featured, not a stripped-down companion
- Client intake and payment portal reduce time spent chasing invoices
- Billing-focused solos pay for case management features they may not need
- Clio Payments processing fees are separate from the subscription cost
- Steeper onboarding curve than a dedicated billing tool
- Advanced billing customization (split billing, complex fee arrangements) sits behind higher-priced tiers
#2: TimeSolv
TimeSolv has been a legal-billing specialist since 1999, and it shows: this is the deepest billing engine of the three, built for firms where billing precision (and defensibility if a client audits an invoice) matters more than anything else. It supports LEDES 1998B and XML formats out of the box, budget tracking with alerts before a matter goes over, and billing rules that can vary by timekeeper, task code, or client — features aimed squarely at attorneys doing insurance defense, or anyone billing corporate clients with strict outside-counsel guidelines.
Pricing is tiered by feature depth: Basic starts around $29.95/user/month, Pro around $39.95, and Elite around $59.95 (annual billing; month-to-month runs higher), with trust accounting included starting at the Pro tier. TimeSolv offers a genuinely unrestricted 30-day free trial with no credit card required, which is more generous than either competitor here. Time entry supports timers, mobile entry, and a browser extension for capturing time spent in email or research tools.
The interface is where TimeSolv shows its age relative to Clio — it's functional but visually dated, and case management is minimal by design, so a solo attorney who wants matter and document management alongside billing will need to run it next to another tool. Support is email/phone during business hours with generally strong reviews for responsiveness, but there's no 24/7 live chat. For a solo whose practice is billing-complexity-heavy (contingency conversions, multi-rate matters, corporate LEDES clients), TimeSolv's depth outweighs the dated UI. For a generalist solo practice, it may be more billing engine than needed.
- Deepest LEDES and billing-rule customization of the three
- Most generous free trial (30 days, no credit card required)
- Budget tracking with proactive overage alerts
- Lower entry price than Clio for billing-only needs
- Strong reputation for billing accuracy on complex/audited invoices
- Interface feels dated compared to Clio and Bill4Time
- Minimal case/matter management — built for billing, not full practice management
- Trust accounting requires the Pro tier or above, not included at Basic
- No 24/7 live chat support
#3: Bill4Time
Bill4Time occupies the middle ground between TimeSolv's billing-only focus and Clio's full-suite approach, offering time tracking, invoicing, and trust accounting alongside basic case and document management, at a lower price point than Clio for comparable functionality. It's owned by AffiniPay, the same parent company behind LawPay and MyCase, which means payment processing integration is tight and built specifically around attorney trust accounting rules rather than a generic payment gateway retrofitted for legal use.
The Time & Billing plan runs roughly $27/user/month (annual billing) and covers time tracking, invoicing, and trust accounting — genuinely competitive pricing for a solo who doesn't need case management. The Legal Suite tier, which adds document management, client portal, and task management, runs closer to $47–$59/user/month. Invoicing supports batch billing and customizable templates, and the LawPay integration means client credit card and eCheck payments settle directly into the correct trust or operating account without manual reconciliation — a real time-saver for solos handling their own bookkeeping.
Bill4Time's weak point relative to the other two is depth: reporting is less customizable than Clio's, and it lacks TimeSolv's LEDES and complex billing-rule support, so firms with corporate or insurance-defense billing requirements will outgrow it. The integration list is also shorter than Clio's — Zapier fills some gaps but that's an extra dependency to manage. For a solo practitioner running a straightforward practice (family law, estate planning, general litigation) who wants clean billing and trust accounting without Clio's price tag or complexity, it's a solid, unglamorous choice.
- Lowest entry price of the three for time/billing/trust accounting combined
- Tight LawPay integration for trust-compliant payment processing
- Batch invoicing and customizable templates reduce end-of-month admin time
- Simpler learning curve than Clio, more polished UI than TimeSolv
- No LEDES support — a hard no for insurance defense or corporate billing work
- Reporting and billing-rule customization are shallower than both competitors
- Case management features are basic even on the higher Legal Suite tier
- Smaller integration ecosystem outside the AffiniPay family
Bottom Line
If you're choosing based on billing needs alone: pick TimeSolv if your practice involves LEDES billing, strict client billing guidelines, or budget-sensitive corporate matters — its billing engine is built for exactly that scrutiny. Pick Bill4Time if you run a straightforward solo practice and want clean, trust-compliant billing at the lowest realistic monthly cost without extra features you won't touch. Pick Clio if you want billing bundled into a practice management system you'll also use for matters, documents, and client communication — you'll pay more, but you're buying one system instead of stitching two together.
For most solo practitioners starting from scratch in 2026, Clio is the default recommendation — not because its billing module is dramatically better than the alternatives, but because most solos end up wanting case management eventually, and re-platforming a billing history and trust ledger later is far more painful than paying for the fuller suite up front. If you're certain billing is the only problem you're solving today, TimeSolv's free trial costs nothing to test against your actual invoices before you commit either way.