Most new-owner guides talk about mindset and hustle; this one talks about the paperwork and systems that actually keep you out of trouble. Work through this checklist in roughly chronological order and you’ll close out your first month with the foundations set — not still scrambling to find your EIN.

What should I do in the very first week, before I do anything else?

Before you spend a dollar on marketing or product, lock in your legal structure. File your LLC, corporation, or DBA with your state’s secretary of state office — most states process online filings in one to three business days for a fee between $50 and $200. If you’re in Florida, for example, you can file a Florida LLC through the Division of Corporations at dos.fl.gov for $125. Once the entity is formed, apply for your Employer Identification Number (EIN) through the IRS at irs.gov — it takes about ten minutes online and the number is issued immediately. You need that EIN before you can open a business bank account or hire anyone.

Also this week: check whether your city or county requires a local business license. In Naples, Florida, for instance, home-based businesses still need a Collier County Occupational License, which runs around $30 annually. In Fort Lauderdale, Broward County issues a Local Business Tax Receipt that applies to virtually every business operating within its borders. These are easy to overlook and annoying to backfill, so handle them now while you have the momentum.

When do I open a business bank account, and does it really matter?

Open the account in week one, the same day you receive your EIN if possible. The single biggest mistake first-time owners make is running early revenue through a personal account — it creates a bookkeeping nightmare and, if you’re an LLC, it can pierce your liability protection because it blurs the line between you and the business. Bring your EIN, your formation documents, and a government-issued ID. Many community banks and credit unions — especially ones listed in regional business directories for South Florida — offer free business checking with no minimum balance for the first year, so shop around before defaulting to a national chain.

Set up a dedicated business credit card at the same time if your credit allows it. Even a modest $2,000 limit card used exclusively for business expenses means every receipt is automatically categorized and searchable come tax time. Put your first recurring costs — domain hosting, software subscriptions, a P.O. box if you work from home — on that card immediately so the habit forms before you’re busy.

What accounting and tax setup do I actually need in month one?

You don’t need a full-time accountant yet, but you do need a system. Pick one piece of accounting software — QuickBooks Online, Wave (free), or FreshBooks — and connect it to your business bank account and credit card on day one of having them. The goal in month one is not to produce a profit-and-loss statement; it’s to build the habit of categorizing every transaction as it happens rather than reconstructing three months of chaos in April. Set a recurring 30-minute calendar block every Friday to review that week’s transactions. Thirty minutes a week now saves roughly eight hours of panic later.

On the tax side, find out whether your state has a sales tax obligation for your product or service and register for a sales tax permit before you make your first sale. Florida has a 6% state sales tax, and Collier County (Naples) adds a 1% discretionary surtax, making the combined rate 7%. Charging the wrong rate or not charging at all creates a liability that compounds quietly. You can register for Florida sales tax through the Florida Department of Revenue’s online portal in about 20 minutes.

How do I handle insurance, and what’s the minimum I actually need?

The minimum viable insurance stack for most small businesses is general liability coverage plus, if you have employees, workers’ compensation. General liability typically runs $400 to $1,500 per year for a small service business and covers third-party bodily injury and property damage — the kind of claim that can otherwise wipe out a new business before it gets started. If you’re in a profession like consulting, design, or bookkeeping, add errors and omissions (E&O) coverage; a single dissatisfied client threatening a lawsuit makes the $600 annual premium feel cheap. Get at least three quotes; brokers that specialize in your industry (search your local business directory for commercial insurance brokers in Naples or Fort Lauderdale) often find rates 20% lower than going direct.

If you’re operating from home, call your homeowner’s or renter’s insurer this week and disclose the business use. Many residential policies explicitly exclude business equipment and liability, which means your $2,000 laptop used for client work may not be covered if it’s stolen. A business rider typically costs under $100 per year and closes that gap.

What does my startup admin checklist look like for weeks two and three?

By the end of week two, you should have your legal entity, EIN, local licenses, bank account, accounting software, and insurance in place. Weeks two and three are for the operational layer. Register a domain name and set up a professional email address on that domain — yourname@yourbusiness.com, not a Gmail address. It costs roughly $12 per year for the domain and $6 per month for Google Workspace or Microsoft 365. Clients and vendors judge credibility on small signals; a branded email is one of the cheapest credibility signals available.

Also in this window: get listed in at least three business directories. A verified Google Business Profile is non-negotiable — it affects whether you appear in local map searches. Beyond Google, submit your business to your regional business directory (publications like this one aggregate Naples and Fort Lauderdale businesses specifically), Yelp, and the Better Business Bureau. Consistent NAP data — name, address, and phone number spelled identically across every listing — matters for local search ranking. Set a calendar reminder to check and update these listings at the 90-day mark.

What gets covered in the final days of month one?

Days 25 through 30 are for documentation and process — the unglamorous work that determines whether your second month is calmer than your first. Write down, even in a simple Google Doc, how you onboard a new client or process a new order. It doesn’t need to be a formal SOP; it just needs to exist outside your head. When you’re sick, distracted, or suddenly busy, a one-page process document is worth more than any productivity app.

Pull together everything you’ve set up and do a single-pass audit: Is the EIN saved somewhere accessible? Are formation documents stored in a cloud folder and a physical folder? Do you have the login credentials for every account — state filings portal, IRS, bank, accounting software, insurance portal — in a password manager? Are your business directory listings live and accurate? Run this audit on day 28 or 29, while you still have two days to fix anything missing. The first month of a new business is chaotic by nature; the goal of this new business checklist isn’t to eliminate that chaos but to make sure the chaos doesn’t leave permanent structural damage. Get the foundation right in 30 days and everything built on top of it is more stable.