What to Do in Your First 90 Days After Buying a Business

You signed the purchase agreement. The wire cleared. The keys — literal or figurative — are yours. Now what?

The first 90 days after buying a business are the most consequential stretch of your ownership. The decisions you make (and the ones you delay) in this window will shape your cash flow, your team's loyalty, and your customers' confidence for years. Most buyers spend so much energy on due diligence and closing that they arrive at Day 1 with no real transition plan. Don't be that buyer.

This guide gives you a practical, phase-by-phase framework for your first 90 days — built around what actually works, not platitudes.

Days 1–10: Stabilize Before You Optimize

Your first instinct may be to make your mark — change the logo, restructure the team, renegotiate vendor contracts. Resist it. The first 10 days have one job: keep everything running exactly as it was. This isn't weakness; it's strategy. You need a baseline before you can improve anything.

Immediately after closing, do these things:

• Change all passwords and access credentials. POS systems, cloud accounts, email admin, bank portals, social media — all of it. The seller should cooperate on this per your purchase agreement. Don't wait a week.
• Notify your bank and establish signatory authority. If this is an asset purchase, you may need to open new accounts entirely. Business banking transitions can take 5–10 business days, so start Day 1.
• Review all recurring payments and subscriptions. Pull 90 days of bank and credit card statements and map every auto-pay. Sellers sometimes carry personal expenses through the business — now is when you find them.
• Meet with your key employees — individually. Not a group announcement. One-on-one. Listen more than you talk. Ask them what they're proud of, what frustrates them, and what they wish the previous owner had done differently. You'll learn more in two hours of these conversations than in two weeks of financial review.
• Introduce yourself to your top 10 customers or accounts. For service businesses and B2B companies, customer relationships are often tied to the previous owner personally. A phone call or in-person visit in the first week signals continuity and builds trust before anxiety sets in.

If your deal included a seller transition period — typically 2 to 4 weeks for businesses under $500K, sometimes 30 to 90 days for deals above $1M — use that time aggressively. Sellers are most cooperative and motivated to help you succeed during this window. Ask every question you have. Shadow operations. Get vendor introductions made in person.

Days 11–30: Map the Real Financials

Due diligence gave you a snapshot. Running the business will give you the actual picture. Within your first month, you need to understand your cash flow reality — not the proforma, not the adjusted EBITDA from the listing, but what money is actually moving through this business on your watch.

Build your own P&L from scratch

Don't rely solely on what was provided during the sale. Pull your own QuickBooks, Xero, or point-of-sale reports. Categorize every expense yourself. Buyers who do this almost always find things — sometimes a lease renewal that's 90 days out, a liability insurance policy that lapsed, a payroll classification issue that creates tax exposure, or a supplier contract that auto-renews at a higher rate. None of these are deal-killers; they're just things you need to know about now, not at tax time.

Know your break-even number

Calculate exactly how much revenue this business needs to generate each month to cover all fixed costs — rent, payroll, insurance, debt service on your acquisition loan, and any other non-negotiable outflows. For most Main Street businesses (retail, food service, personal services), that number is simpler to calculate than you think. For businesses with variable labor or inventory-heavy models, build a simple spreadsheet with low, mid, and high-revenue scenarios.

If you financed the acquisition with an SBA 7(a) loan — the most common financing vehicle for business purchases in the $150K–$5M range — your monthly debt service is fixed. A $500,000 SBA loan at current rates (approximately 10.5–11.5% as of mid-2025) on a 10-year term will run roughly $6,500–$7,000/month. That number needs to be baked into your break-even from Day 1.

Establish relationships with your accountant and attorney

If you used professionals during due diligence, keep them engaged. If you didn't have a CPA involved, get one now. Business tax structure — S-corp elections, estimated quarterly payments, depreciation schedules on purchased assets — has real dollar consequences. In many states, an asset purchase triggers a sales tax obligation on purchased equipment and inventory. Florida, for example, requires buyers to obtain a Certificate of Registration and may require sales tax on asset transfers. Texas, California, and New York have their own rules. Your CPA should walk you through your state's requirements within the first 30 days.

Days 31–60: Understand the Operations Deeply

By the end of month two, you should be able to run a full week of operations without leaning on the seller or a single key employee. That doesn't mean you know everything — it means you understand the critical path of daily operations well enough to identify where the real dependencies are.

Document every process that only exists in someone's head

Most small businesses run on tribal knowledge. The opening procedure, the vendor order cadence, the way customer complaints are handled, the formula for the house sauce — if it only lives in an employee's memory, it's a liability. Spend time in this period doing what consultants charge thousands for: sitting next to your team and writing down how things actually work. Even rough SOPs (standard operating procedures) in a Google Doc are better than nothing.

Evaluate your team honestly

By 60 days, you'll have a clear read on your staff. Some employees will rise to the transition and become genuine allies. Others will test boundaries or coast. A small percentage may be actively working against you — protecting their own informal power or waiting to see how things shake out before committing. The 60-day mark is a reasonable point to make any necessary staffing adjustments, because you have observed behavior long enough to act with confidence rather than reactivity.

Be mindful of at-will employment rules, which vary by state. California has stricter employee protections than most; Florida and Texas give employers more flexibility. If you're making any significant personnel changes, run them by your attorney first — especially if you're in a state with paid leave mandates, specific termination notice requirements, or non-compete enforcement issues.

Audit your vendor relationships

List every supplier, service provider, and contractor the business uses. Rank them by spend and by operational criticality. Then, for your top five vendors, get on a call or meet in person. Introduce yourself, confirm the terms of your relationship (some contracts don't automatically transfer in an asset sale), and ask directly whether there's anything they'd change. Vendors will tell you things about the previous owner — supply chain issues, payment history, informal arrangements — that you'd never find in a data room.

Days 61–90: Build Your Own Strategy

The first 60 days were about understanding and stabilizing what you bought. Days 61–90 are when you start owning it in the fullest sense — making decisions based on your own analysis, not inherited patterns.

Identify your first improvement initiative

Pick one thing to improve — not five. Maybe it's adding online booking to a service business that still takes appointments by phone. Maybe it's renegotiating a lease that's 18 months from expiration. Maybe it's launching a loyalty program for your existing customer base, which costs almost nothing and can increase repeat visit frequency by 15–30% in retail and food service environments. One focused initiative completed well is worth more than three half-implemented ideas.

Review your original valuation assumptions

Go back to what you paid and why. Most Main Street businesses sell for 2–3x Seller's Discretionary Earnings (SDE). Service businesses with recurring revenue (HVAC, pest control, digital agencies) often trade at 3–4x SDE. Restaurants typically sell at 1.5–2.5x SDE, sometimes lower, because of the operational intensity and thin margins. Now that you've run the business for 60 days, ask: is the SDE you're on track to generate this year consistent with what you underwrote? If you're running 15–20% below expectations, that's information — and it means adjusting your own salary expectations, your growth timeline, or your cost structure before the end of year one.

Set your 12-month targets

By Day 90, you should be able to write down four things: your revenue goal for the next 12 months, your target owner's compensation (SDE), your single biggest operational risk, and your top growth lever. These don't need to be perfect. They need to exist. Owners who articulate targets — even rough ones — consistently outperform those who just try to maintain momentum. Writing it down matters.

A Note on Working With Your Broker Post-Close

If you worked with a business broker to find and close this acquisition, they're still a resource post-close — especially if they have ongoing relationships in your market or industry. At BuyThe.Biz, Barrett Henry works with buyers across Florida and connects buyers in other states with experienced brokers through a nationwide referral network. Whether you're in the thick of your first 90 days or evaluating your next acquisition, having a broker relationship you trust pays dividends beyond the transaction itself.

The buyers who struggle in their first 90 days are almost always the ones who closed fast and planned slowly. Flip that sequence, and you'll be in a very different position by the time month three ends.