8 platforms priced · Last updated July 2026

Law Firm Accounting Software: Legal Accounting, IOLTA Trust Accounting and Bookkeeping Compared for 2026

Law firm accounting software does two jobs a general accounting package cannot: it keeps a separate running balance for every client whose money you hold, and it proves each month that those balances agree with the bank. That second job, the three-way reconciliation, is what most state bars require and what general ledgers like QuickBooks and Xero have no native concept of. The market splits into all-in-one legal platforms with a built-in general ledger, and legal layers that sit on top of QuickBooks Online. This page prices both with figures checked in July 2026, explains the trust rules that drive the purchase, and covers the change that raises the bill for thousands of firms on August 1: Intuit's second QuickBooks price increase of the year.

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Exhibit A The short answer

What legal accounting software does that QuickBooks alone cannot

Every firm asks the same first question: why can we not just use the accounting software everyone else uses. These six jobs are the answer, and five of them exist only because lawyers hold other people's money.

01 · LEDGERS

A ledger per client, inside one bank account

An IOLTA account is pooled. The bank sees one balance; the bar expects you to know, at any moment, exactly how much of it belongs to each of 90 clients. Legal accounting software keeps those sub-ledgers. A general ledger keeps one number.

02 · RECONCILE

Three-way reconciliation on a schedule

Bank statement, trust book balance, and the sum of client ledgers all have to agree, usually monthly. Legal tools generate that report in a click and keep the signed history. In QuickBooks you build it by hand in a spreadsheet.

03 · OVERDRAFT

Blocking the disbursement before it happens

Paying a $4,000 expert out of a client who only has $2,500 in trust means you just spent another client's money. That is the single most common trust violation. Legal software refuses the entry; generic software processes it.

04 · EARNED

Moving money only when it is earned

Retainer money is the client's until you bill against it. The transfer from trust to operating has to follow an invoice, in that order, with a record. Legal platforms tie the transfer to the invoice so the sequence is provable.

05 · MATTER

Profit and loss by matter, not just by month

Which practice area actually makes money, which contingency files are underwater, what a case cost to carry. Legal accounting hangs revenue and cost off the matter. Standard charts of accounts hang them off the month.

06 · COSTS

Advanced client costs as an asset

Filing fees and expert invoices your firm fronts are a receivable, not an expense, until the client reimburses you. Booking them the wrong way overstates costs and understates what the firm is owed at year end.

Exhibit B The decision

Two architectures, and how to tell which one you are buying

Nearly every shortlist in this category is really a choice between two shapes. Get the shape right and the vendor choice inside it is comparatively easy.

01

One platform with a real general ledger inside it. CosmoLex is the clearest example: practice management, billing, trust, and double-entry accounting in one subscription, with no QuickBooks underneath. One login, one vendor, one reconciliation. The tradeoff is that your CPA has to work in a system they probably do not use with any other client.

ALL-IN-ONE

02

QuickBooks Online as the ledger, with a legal layer on top. LeanLaw, or a practice platform like Clio or MyCase, handles time, billing, and trust sub-ledgers, then syncs to QuickBooks for the books. Your accountant stays in familiar software and your firm gets legal-grade trust handling. The tradeoff is two subscriptions and a sync that has to be watched.

LAYERED

03

A dedicated trust tool beside whatever books you already keep. TrustBooks exists for firms whose only real gap is IOLTA. It prices per firm rather than per user, does the three-way reconciliation, and leaves the operating books wherever they are. For a solo or a two-lawyer office this is often the cheapest compliant setup by a wide margin.

TRUST-ONLY

04

QuickBooks or Xero alone, with trust tracked in a spreadsheet. This is what a large number of small firms actually do, and it is the setup that produces bar complaints. The spreadsheet is not the problem in itself; the problem is that nothing stops an overdraft and nothing reconciles automatically, so errors sit undiscovered for months.

AVOID

Exhibit C The chart

Law firm accounting software compared, with July 2026 prices

Checked in July 2026 against vendor pricing pages and current pricing trackers rather than older review-site listings, several of which in this category are a year or more out of date. Confirm your own number in a quote before you sign.

Platform	Shape	Price (July 2026)	Best for	Watch out for
CosmoLex	All-in-one: practice management, billing, trust, and full double-entry accounting with no QuickBooks underneath.	Core plans (Standard, Elite) are quote-based; public listings range roughly $89 to $149 per user/mo. CRM add-on $147/mo annual for up to 3 users	Firms that want one system and one vendor for everything	CosmoLex stopped publishing core plan prices; your CPA may not know the software
LeanLaw	Legal layer built natively on QuickBooks Online: time, billing, IOLTA trust, two-way QBO sync.	Core $55/user/mo, Pro $75/user/mo, Enterprise by quote, plus a QuickBooks Online subscription	Firms whose accountant insists on QuickBooks	You pay for two products; LEDES billing sits in the $75 Pro tier
TrustBooks	Dedicated trust accounting, priced per firm rather than per user, with optional firm accounting on top.	Tier One (trust only) $59/mo, Tier Two (firm and trust) $79/mo, Tier Three (with bank reconciliation service) $249/mo. Extra users $10/mo each	Solos and small firms whose only real gap is IOLTA	Not a practice management system; Tier Three caps at 100 transactions a month
QuickBooks Online	General ledger only. The books, taxes, and reporting layer nearly every US CPA already works in.	Simple Start $35, Essentials $70, Plus rising to $140 and Advanced to $340 per month from August 1, 2026	The operating books, paired with a legal trust layer	No client trust ledgers, no overdraft block, no three-way reconciliation on its own. Two price rises in 2026
Xero	General ledger only, with a legal-industry landing page but no legal-specific trust engine in the US.	Published small-business tiers; check current US rates	Firms whose bookkeeper prefers Xero to QuickBooks	Same trust gap as QuickBooks, with a smaller US legal integration ecosystem
Clio Manage	Practice platform with trust sub-ledgers and billing; syncs to QuickBooks or Xero for the general ledger.	EasyStart $49, Essentials $89, Advanced $119, Expand $149 per user/mo annual	Firms already standardized on Clio for matters	Not a general ledger; you still buy accounting software alongside it
MyCase	Practice platform with an accounting add-on that performs three-way trust reconciliation.	Basic $39, Pro $89, Advanced $109 per user/mo annual; accounting add-on $39/mo	Small firms wanting one bill for matters, billing and trust	The trust reconciliation lives in a paid add-on, not the base price
PracticePanther	Practice platform including trust accounting at the entry tier, with QuickBooks sync for the books.	Solo $49, Essential $69, Business $89 per user/mo annual; Business Pro around $114	Solos who want trust handling included rather than added	Still a front end to a general ledger you buy separately

Two notes worth carrying into a budget. Clio's figures above reflect what the current 2026 pricing trackers agree on, and several older review listings still publish a different set ($39, $79, $109, $139) under the tier name Complete rather than Expand, so confirm your tier in writing. And CosmoLex, long the most price-transparent all-in-one in legal, now lists core Standard and Elite plans without a public rate, so treat any single number you read for it as a data point rather than a quote.

Exhibit D The compliance core

How a three-way reconciliation actually works

This is the report that decides whether your accounting software was worth buying. If you can produce it in a click every month, the software works. If it takes a weekend and a spreadsheet, it does not.

01

Start from the trust bank statement. Take the ending balance from the bank, then adjust for outstanding checks and deposits in transit to get the adjusted bank balance. This is the only one of the three numbers you do not control.

BANK

02

Compare it to the trust book balance. Your accounting system's own balance for the trust account. If this does not match the adjusted bank figure, something was recorded wrong, recorded twice, or not recorded at all.

BOOK

03

Add up every individual client ledger. Every client with money in trust has a running balance. Summed, they must equal the other two numbers exactly. This is the leg firms skip, and the leg that catches a client whose balance has gone negative.

CLIENTS

04

Document it, sign it, keep it. Most bars expect a monthly reconciliation, reviewed by a lawyer rather than only by a bookkeeper, retained for a period of years. The report you cannot produce for a random audit month is the one that causes the problem.

SIGN

Worked example

A reconciliation that does not balance

A firm holds trust money for three clients. The bank says $41,500. The books say $41,500. Both legs agree, so a firm reconciling only two ways stops here and calls it clean.

Client ledger: Alvarez	$18,000
Client ledger: Broward Holdings	$26,000
Client ledger: Chen	($2,500)
Sum of client ledgers	$41,500

The total matches, so all three legs tie. The firm is still in violation. Chen's balance is negative $2,500, which means a $2,500 disbursement on the Chen matter was funded by Alvarez and Broward's money. A summed total can hide this; only the per-client ledger shows it. Good software refuses the disbursement at entry. This is the single best test to run on any demo: ask the salesperson to pay out more than a client holds and watch what the system does.

Exhibit E The real number

What a five-attorney firm actually pays per month

List prices are per user, so the interesting comparison is total monthly cost at a realistic firm size. Five attorneys plus two staff who need a login, July 2026 rates, annual billing.

Setup	What you pay for	Monthly total
Trust-only, books elsewhere	TrustBooks Tier Two at $79 per firm, plus $10 for each of 4 extra users, plus QuickBooks Simple Start at $35	about $154
QuickBooks plus a legal layer	LeanLaw Core at $55 across 7 users, plus QuickBooks Plus at the post-August rate of $140	about $525
Practice platform plus books	MyCase Pro at $89 across 7 users, plus the $39 accounting add-on, plus QuickBooks Simple Start at $35	about $697
Full stack on Clio	Clio Essentials at $89 across 7 users, plus QuickBooks Plus at $140, before Clio Duo or Clio Grow	about $763

The spread between the cheapest compliant setup and the most complete one is roughly $600 a month, or $7,200 a year, at seven seats. That gap is worth understanding before you shortlist, because the cheapest option is genuinely sufficient for a firm whose only gap is trust compliance, and genuinely insufficient for a firm that also needs matters, documents, and client billing in the same place. If billing rather than bookkeeping is your real problem, our legal billing software guide prices that side of the market separately.

One timing note. Intuit raised QuickBooks Online prices twice in 2026: once in May, and again on August 1, when Plus moves to $140 and Advanced to $340 per month. Any firm modeling a QuickBooks-based stack on figures from earlier in the year is working from numbers that no longer hold, and firms on annual terms should check what their renewal quote looks like against the all-in-one options above.

Exhibit F FAQ

Law firm accounting software, common questions

The questions US firms actually search before they buy.

What is the best accounting software for law firms?

There is no single winner, because two architectures split the market. If you want one system with a real general ledger and trust accounting built in, CosmoLex is the standard answer. If you want your books in QuickBooks Online where your CPA already works, pair it with LeanLaw at $55 per user per month or with your practice platform. Firms that only need the trust side and keep books elsewhere use TrustBooks from $59 per month.

Can I use QuickBooks for a law firm trust account?

You can, but not safely on its own. QuickBooks Online has no concept of a client-level trust ledger, will not stop you disbursing more than a client holds, and cannot produce a three-way reconciliation report on its own. Firms that run QuickBooks compliantly add a legal layer such as LeanLaw, or a practice platform that pushes trust activity into QuickBooks as the general ledger. The workaround of tracking client balances in a spreadsheet beside QuickBooks is common and is exactly what bar auditors look for.

What is IOLTA accounting?

IOLTA stands for Interest on Lawyers Trust Accounts. It is the pooled bank account a US firm uses to hold client money it has not yet earned, such as advance retainers and settlement proceeds, with the interest remitted to the state bar foundation to fund legal aid. IOLTA accounting is the practice of tracking each client balance inside that pooled account so that no client's money is ever used for another client's matter or for the firm's own expenses.

What is a three-way reconciliation?

A three-way reconciliation proves that three numbers agree: the trust bank statement balance, the trust account book balance in your ledger, and the sum of every individual client ledger. Most state bars require it monthly. If the three do not match to the penny, money has moved that should not have, and the firm needs to find it before an auditor does. Worked through with an example in Exhibit D above.

How much does law firm accounting software cost?

TrustBooks starts at $59 per month per firm for trust only and $79 with firm accounting. LeanLaw is $55 per user per month for Core and $75 for Pro, plus a QuickBooks Online subscription from $35. CosmoLex does not publish core plan prices and quotes per firm. A five-attorney firm with two staff typically lands between $150 and $800 a month depending on which of those architectures it picks.

Do I need separate accounting and practice management software?

Not necessarily. CosmoLex and some practice platforms include a general ledger, so one subscription covers both. Most firms still run two systems, because their CPA wants QuickBooks and their lawyers want a practice platform. That is a reasonable setup as long as trust activity flows automatically between them rather than being retyped once a month, since manual re-entry is where reconciliation breaks. Our legal practice management software guide covers the platform side of that pairing.

What is the best accounting software for a solo attorney?

For a solo holding client funds, TrustBooks at $59 per month is the cheapest defensible answer, because it prices per firm rather than per user and produces the three-way reconciliation for you. Pair it with QuickBooks Simple Start at $35 for the operating books. A solo who takes only flat fees earned on receipt and holds no trust account can skip legal-specific accounting entirely and use ordinary small-business software.

Is Xero good for law firms?

Xero handles the operating side of a law firm well and is popular with firms whose bookkeeper prefers it. It has the same gap as QuickBooks on the trust side: no client-level trust ledgers and no built-in three-way reconciliation. US firms on Xero usually run trust accounting in their practice platform or in a dedicated tool such as TrustBooks and keep Xero purely for the general ledger and tax reporting.

How often do law firms have to reconcile their trust account?

Monthly is the common requirement across US state bars, though the exact rule and retention period vary by state, so check your own bar's trust accounting rule rather than a general guide. Many firms with high trust volume reconcile weekly instead, because catching a misposted deposit within days is far easier than reconstructing it at month end. Retention periods of five to seven years after the matter closes are typical.

Does legal case management software include accounting?

Most include trust sub-ledgers and billing, but few include a true general ledger. Clio, MyCase, and PracticePanther all track client trust balances and sync to QuickBooks or Xero for the books. CosmoLex is the main exception, with double-entry accounting built in. When a vendor says it has accounting, ask specifically whether it produces a balance sheet and a three-way reconciliation, or only tracks trust balances.

Exhibit G Being straight

Where Caseagent fits, and where it does not

We would rather tell you the boundary now than have you find it during a trial.

Caseagent is not a general ledger and does not do your trust accounting. We are not going to sell you a chart of accounts. If you hold client money, you need one of the systems above, and no AI layer changes that.

What the agent does is sit inside the case file and handle the work that generates the accounting entries in the first place: reading what arrives on a matter, pulling out the deadlines and obligations, drafting what comes next, and keeping the record of what happened on each file. Firms lose more money to unbilled time and missed deadlines than to bookkeeping inefficiency, and that is the gap we work on. If the unbilled side is your bigger leak, start with legal time tracking software rather than a new general ledger.

In practice the pairing that makes sense is a real accounting system for the money and an agent for the matter. Caseagent is in early access, launching 2026, priced per firm rather than per seat.

Exhibit H Keep reading

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