How much do you need to start an accounting firm
An accounting firm is one of the cheapest real businesses you can start, which is exactly why so many owners undercapitalize the part that actually matters. The gear and software for a home-based solo firm run three to fifteen thousand dollars. But the number that decides whether you survive is not on any equipment list; it is how many months you can pay your own mortgage while a book of recurring clients slowly fills up. Here is what it really costs, split into the money you spend and the money you must not run out of.
The one-time startup number is small
Line by line, the cost to open the doors of a home-based solo firm is modest. There is no build-out, no inventory, no fleet. The whole launch fits on one page:
| Item | Lean cost | Note |
|---|---|---|
| LLC filing + registered agent | $50 to $500 | Secretary of state fee, varies by state |
| PTIN + EFIN | ~$20 | EFIN is free; PTIN renews yearly |
| Laptop, dual monitors, scanner, printer | $2,000 to $3,500 | One-time hardware, covered in buying equipment |
| E&O (professional liability), first installment | $600 to $2,500/yr | Non-negotiable before the first client |
| Tax software (Drake to Lacerte) | $345 to $3,000+/yr | Your biggest recurring line |
| Website + logo + branding | $500 to $3,000 | Or DIY to start |
| Working software (portal, proposals) | ~$100 to $300/mo | Starts before revenue does |
Add it up and a genuinely lean, home-based solo firm opens for about $3,000 to $8,000, and a more comfortable version with a paid website and premium software lands around $10,000 to $15,000. That is it. The startup cost is not the hard part.
The number that actually matters is runway
Here is the part the equipment lists ignore. A retainer firm’s revenue does not arrive on day one; it stacks one client at a time and then spikes at tax season. If you are leaving a salary, the real question is how many months you can cover your own living expenses while that book fills.
Plan for six months of personal expenses in the bank. At a $5,000-a-month household burn, that is $30,000 of runway, and that number dwarfs your entire equipment budget. It is the difference between pricing calmly and taking every desperate low-fee client that walks in because rent is due. Owners who launch alongside a part-time W-2, or who start moonlighting clients before quitting, effectively self-fund this and take on far less risk.
Where the money actually goes: overhead is a choice
Almost every large startup number in accounting is a decision to add overhead, not a requirement. The two big ones are an office and staff.
An office turns a near-free launch into a real monthly obligation: $1,000 to $3,500 a month in rent plus a deposit, furniture, and utilities, easily $15,000 to $30,000 in year-one commitment for a small suite. Most clients now meet over video or exchange documents through a portal, so the office is optional until you have in-person clients or a team. Staff is the other lever; a part-time seasonal preparer for tax season is common and cheap, but a full-time hire adds $45,000 to $75,000 a year plus payroll tax and workers’ comp. The full staffing math is in when and how to hire.
Funding it: most firms should not borrow
Because the number is small, the best funding source is usually your own savings plus early client cash. This is not a business that needs investors. Realistic paths, in order of how much they suit a firm this size:
- Self-funding from savings: cleanest, keeps 100% ownership, and $10k to $30k covers a real launch plus runway.
- A small SBA microloan or a bank/credit-union line of credit: useful as a safety net for the lumpy cash between now and tax season, not to fund a lavish launch.
- Moonlighting revenue: landing three to five clients while still employed is the cheapest capital there is, because it funds the business with the business.
Self-fund vs borrow to launch
- You keep full ownership and answer to no lender or investor.
- No debt payment dragging on the thin early months before revenue stabilizes.
- Forces a lean launch, which is the right instinct for a low-cost business anyway.
Self-fund vs borrow to launch
- All the startup risk sits on your personal savings.
- Thin reserves can push you into taking bad-fit, low-fee clients out of cash pressure.
- No buffer if a big client pays late during your first tax season.
For nearly every solo or small firm, self-fund and keep a modest line of credit untouched as insurance. Borrowing to launch a business this cheap usually means you are funding overhead you should not be adding yet.
Getting found is the part that decides everything
The startup budget is the easy half. Turning it into paying clients before your runway runs out is the half that decides the firm. Two moves are free and worth doing the week you open. Claim and fully complete a Google Business Profile, and ask your first few clients for a Google review with a direct link, because a firm with reviews outranks a slicker site with none. The playbook for landing those first clients is in how to get clients for your firm.
The higher-stakes lever is your website and any paid marketing. A firm site that loads fast, ranks locally, and turns a searcher into a booked consult brings in the recurring clients that shorten your runway problem, and building one that actually converts is harder than it looks. To have it handled, get a free video walkthrough. For SEO and paid ads, see our services, and if you are still shaping the business itself, start at expntl.com.
Frequently asked questions
How much does it cost to start an accounting firm?
A home-based solo firm opens for roughly $3,000 to $15,000: entity filing, hardware, tax software, E&O insurance, and a website. It is a laptop-and-software business with no inventory, so the setup is cheap. The number that actually matters is runway, and you should plan for about six months of personal living expenses on top.
What is the single biggest startup expense?
Not gear. It is either the recurring software run-rate of $200 to $600 a month that begins before clients do, or, if you choose it, an office lease that can commit you to $50,000-plus a year. Both dwarf the one-time cost of a laptop and monitors. The equipment breakdown is in buying equipment and supplies.
Do I need an office to start?
No, and most owners should not. Clients meet over video and exchange documents through a secure portal, so a home office works until you have in-person clients or staff. Signing a lease before recurring revenue exists is a common and expensive mistake.
How much money should I keep in reserve?
Roughly six months of personal living expenses, because retainer revenue stacks slowly and tax-season cash is lumpy. At a $5,000 monthly household burn, that is about $30,000, which is larger than your entire equipment budget and is the real capital requirement for the business.
Can I start while keeping my day job?
Yes, and it is the smartest way to fund a firm this cheap. Landing three to five clients on the side before you quit self-funds the launch and shrinks the runway problem to almost nothing. Go full-time the month recurring revenue covers your salary, not before.
