How to start a law firm: a step-by-step guide for going solo
Starting a law firm means picking a practice area and niche, choosing a business structure (usually a PLLC or PC), registering the business and getting an EIN, buying malpractice insurance, confirming bar and licensing compliance in your state, opening business banking plus a separate IOLTA/trust account, setting up practice-management and accounting software, and building a simple website to land your first clients — all before you've billed a single hour. Most solo attorneys spend somewhere between a few thousand dollars and $50,000+ getting there, depending on practice area and how lean they run.
This guide walks through that sequence in order, with the parts that trip people up flagged along the way.
A quick but important note: bar admission, entity choice, and trust-account rules are governed by your state bar and state law, and they vary. Nothing in this article is legal advice — check your state bar's rules and talk to a licensed attorney or accountant before you file anything.
- Sequence matters — entity + EIN before banking, banking before your trust account, insurance before any client file
- A solo/small launch runs from a few thousand dollars (lean, home office) to $50,000+ (office, staff, marketing)
- Malpractice insurance and a compliant IOLTA/trust account aren't optional — most state bars require or expect both
- Nearly half of U.S. lawyers in private practice are solo — the largest segment of the profession, not a fringe path
Pick a practice area and a niche
Generalist solo practices exist, but most successful ones narrow fast — family law, immigration, estate planning, criminal defense, small-business/transactional, personal injury, or a specific niche within one of those (say, elder law within estate planning, or H-1B within immigration).
Why narrow matters for a new firm: referral sources, marketing, and even software all get cheaper and more effective when you're known for one thing. A generalist competing against 20 established generalists in the same city has a harder first two years than a specialist who's the obvious answer for one kind of case.
If you're coming from a firm job, the fastest path is usually the practice area you already know — you keep your expertise, your referral relationships, and (if your prior firm's rules allow it) sometimes even a client or two.
Choose a business structure — then confirm it with a professional
Most solo and small law firms organize as a PLLC (professional limited liability company) or a PC (professional corporation). Both shield personal assets from general business liabilities (not malpractice — that's what insurance is for) and offer different tax treatment.
- PLLC: simpler to set up and maintain, pass-through taxation by default, common for solo and small partnerships.
- PC: more formal, can elect S-corp tax treatment, sometimes required or preferred in certain states for law practices.
Not every state allows both, and some require a specific professional entity type for licensed practices. This is exactly the kind of decision to run past an accountant and, ideally, a business attorney before you file — the "right" answer depends on your state, your income projections, and how you plan to bring on partners or associates later.
Register the business and get an EIN
Once you've picked a structure with your advisor:
- File your entity with your state's Secretary of State (or equivalent).
- Get an EIN from the IRS (free, done online in minutes at irs.gov) — you'll need it for banking, payroll, and tax filing.
- Register a DBA/trade name if your firm name differs from your entity's legal name.
- Check local business licensing — many cities and counties require a general business license or home-occupation permit even for a licensed profession.
Confirm bar and licensing compliance in your state
This is the step where a generic checklist can't do the work for you. Every state bar has its own rules on:
- Active bar status and any CLE requirements before you can practice independently
- Firm name rules (what you can and can't call your practice)
- Advertising and solicitation rules for a new firm's marketing
- IOLTA/trust account requirements (below) and what happens if you get them wrong
Call your state bar's practice-management or ethics hotline before you launch. Most bars offer this for free, and it's the single highest-leverage phone call you'll make — it can save you from a compliance mistake that follows you for years.
Buy malpractice insurance
Malpractice insurance (also called professional liability insurance) protects you if a client alleges you made an error that cost them money. A handful of states require it or require disclosure if you don't carry it; even where it's not mandated, most bar associations strongly recommend it, and many court-appointment and referral panels won't work with uninsured attorneys.
Premiums vary by practice area (litigation and real estate tend to run higher than transactional or estate planning), years of experience, and coverage limits, but budgeting for it from day one — not after your first close call — is standard practice.
Open business banking and a separate trust (IOLTA) account
This is one of the most common early mistakes: commingling operating funds and client funds. Nearly every state bar treats this as a serious ethics violation, sometimes a disbarment-level one.
- Business checking account — your firm's operating funds, in your entity's name, using your EIN.
- IOLTA (Interest on Lawyers' Trust Accounts) or trust account — holds client retainers and settlement funds separately, per your state bar's trust accounting rules. Never pay firm expenses directly out of this account.
Get your law firm accounting system set up at the same time as your bank accounts — reconciling a trust account manually, after the fact, is how firms end up in front of their state bar's disciplinary board.
Set up practice-management and accounting software
Most new solo firms run on three tools from day one:
- Practice-management software — case/matter tracking, calendaring, document management, and (critically) trust accounting built for legal-specific compliance. See law practice management software for how to evaluate options.
- Accounting software — either integrated with your practice-management tool or standalone, tied to your accounting setup.
- E-signature and billing tools — for engagement letters, invoicing, and client intake.
The market has consolidated around a handful of cloud platforms built specifically for law firms rather than generic small-business tools, largely because of trust-accounting compliance features generic tools don't handle.
Build a website and land your first clients
A simple, professional website — practice areas, attorney bio, contact info, and a clear intake path — is table stakes before you spend a dollar on marketing. From there, most new solo firms combine:
- Referral relationships with other attorneys, past colleagues, and professional networks
- Local SEO (Google Business Profile, reviews, practice-area landing pages)
- Bar association and community involvement — still one of the highest-converting channels for a new solo practice
- Paid or organic content marketing once the basics are in place
For the full playbook on channels, timelines, and what actually converts for a new firm, see law firm marketing.
- ✓Full control over practice area, clients, and pricing — you keep the economics of your own work
- ✓Lower overhead than a traditional firm if you run lean (cloud software, home/shared office)
- ✗You're also CFO, marketer, and office manager — non-billable admin eats into year-one revenue
- ✗Startup costs and a client-pipeline gap (little revenue for the first weeks or months) must be funded from savings or working capital
A realistic startup budget
Costs vary enormously by practice area and how lean you run — a home-office estate-planning practice on cloud software looks nothing like a litigation firm renting downtown office space with a paralegal on day one. The ranges below are illustrative, not quotes.
| Step | What it involves | Watch for |
|---|---|---|
| Entity formation + EIN | State filing fee, registered agent (if used), IRS EIN (free) | State filing fees vary widely; some states charge ongoing franchise/annual fees |
| Bar/licensing compliance | Active bar dues, CLE, firm-name and advertising review | Budget the time as much as the money — this step gates everything else |
| Malpractice insurance | Annual premium, varies by practice area and coverage limit | Litigation and real estate typically cost more than transactional practices |
| Business banking + trust account | Bank fees (often minimal), trust account setup with your bar-approved bank | Use a bank on your state bar's approved IOLTA list — not every bank qualifies |
| Practice-management + accounting software | Monthly/annual SaaS subscriptions | Trust-accounting features matter more than flashy extras — check compliance fit first |
| Website + basic marketing | Domain, hosting, design, initial local SEO or ads | A simple, clear site beats an expensive one that takes months to launch |
| Office space (optional) | Home office, shared/coworking space, or a lease | Many new solo firms skip this entirely for the first 6–12 months |
| Working capital / runway | Covers overhead during the client-pipeline ramp-up | The line item most new firms underestimate |
That last line — working capital — is where most first-year law firm failures actually start: not a bad case, but a cash-flow gap between paying rent and software bills and the first retainers clearing. Some firms bridge it with savings; others use a working-capital product like Byzfunder's law firm financing to cover startup costs and payroll while the client pipeline builds, funded directly and often same-day-to-24h once approved.
Bottom line
Starting a law firm is a business launch wrapped around a licensed profession — the legal work is the product, but the sequence that gets you there is straightforwardly operational: pick a lane, form the right entity (with professional advice), register and get your EIN, insure yourself, keep client and operating money strictly separate, run compliant software, and build a simple client-acquisition engine before you need it to work. The biggest risk isn't usually the legal work — it's underestimating the cash-flow gap between opening the doors and the first retainers clearing.
FAQ
How much does it cost to start a law firm? It ranges from a few thousand dollars for a lean, home-office solo practice on cloud software to $50,000 or more for a firm with leased office space, staff, and a fuller marketing budget. Practice area, location, and how much staff/space you take on day one drive most of the variance.
What business structure should a new law firm use? Most solo and small firms use a PLLC or PC, both of which shield personal assets from general business liabilities. The right choice depends on your state's rules and tax situation — confirm it with an accountant or business attorney before filing.
Do I need malpractice insurance to start a law firm? Some states require it or require disclosure if you don't carry it; even where it's optional, most bar associations recommend it and many referral and court-appointment panels require proof of coverage. Check your state bar's specific rule.
How do I get my first clients as a new law firm? Most new solo firms combine referral relationships (other attorneys, past colleagues, bar association networks), a clear website with local SEO, and community/bar involvement. Paid marketing usually comes once the basics — site, intake process, reviews — are in place. See law firm marketing for channel-by-channel detail.
What software does a new law firm need? At minimum: practice-management software with built-in trust accounting, accounting software, and e-signature/billing tools. Trust-accounting compliance is the feature that separates legal-specific platforms from generic small-business software. See law practice management software.
What's the difference between a business account and a trust (IOLTA) account? Your business account holds firm operating funds. Your IOLTA/trust account holds client retainers and settlement funds separately, per your state bar's rules. Commingling the two is one of the most common — and most serious — ethics violations for new solo attorneys.
Can I start a law firm with no money? Not with zero cost — entity filing, bar dues, and insurance are hard minimums in most states — but you can start extremely lean: home office, cloud software on monthly plans, and no staff. Many solo attorneys bridge the pre-revenue gap with savings or a working-capital product rather than raising outside investment, since law firms typically don't take on equity investors.
Do I need an office to start a law firm? No. Many new solo practices — especially transactional, estate planning, and immigration — start entirely from a home office or shared/coworking space and only lease dedicated office space once revenue supports it. Check your state bar's rules on maintaining a registered business address, which can sometimes be met without a traditional office lease.
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