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small business scams

Running a small business can feel like juggling knives, payroll, customers, vendors, and that inbox that never ends. Scammers know you're busy. They also know a small team can't double-check everything.

In the US, fraud hits small companies hard. Businesses with fewer than 100 employees can face a median loss of $141,000 per fraud case, and the FBI reported $16.6 billion in cybercrime losses in 2024. Meanwhile, scammers now use AI-written emails, spoofed caller ID, and even voice cloning to sound "real" on the first try.

Below are 11 common scams aimed at small businesses, what they look like, the red flags, and simple ways to block them without turning your day into a security project.

Digital scams that sneak in through email, search, and login screens

These scams usually start with a message that feels routine. A "bank alert," a "shared document," a "vendor invoice," or a "marketing report." The trick is that one rushed click can turn into a wire transfer, stolen logins, or a hijacked website.

Spear phishing that looks like your boss, your bank, or a trusted vendor

What it looks like: A targeted email or text that references your business, a real vendor, or a real manager. It often asks for an urgent wire, gift cards, or a "password reset." Unlike generic spam, spear phishing sounds like it belongs in your normal workflow.

Why it works: Small teams move fast. If "the boss" emails at 4:55 p.m. with urgency, people try to help.

Red flags

  • The sender's domain is close, but slightly off (like one letter swapped).
  • The "reply-to" address doesn't match the visible sender name.
  • You're pushed to act fast, and told not to call anyone.
  • The link goes to a login page you weren't expecting.

Prevent it

  • Require call-back verification using a known number, not the one in the email.
  • Turn on multi-factor authentication (MFA) for email and key tools.
  • Limit admin access so one stolen login can't do everything.
  • Train staff using a simple, repeatable checklist (use this practical phishing protection guide to build a shared "spot it fast" habit).

If a message creates urgency and secrecy at the same time, treat it as suspicious until proven otherwise.

Fake invoicing and payment change requests that reroute money to the scammer

What it looks like: An invoice arrives that looks normal, or a "vendor" says they have new ACH or wire details. Sometimes scammers break into a real vendor's email, then reply inside an existing thread so the request looks legit.

Why it works: Paying vendors is routine. Scammers hide inside routine.

Red flags

  • Bank details changed, even though the vendor name stayed the same.
  • A new remittance address appears without explanation.
  • The invoice has mismatched PO numbers, totals, or project names.
  • The email tone suddenly shifts to urgency or pressure.

Prevent it

  • Create a written "change payment details" process, no exceptions.
  • Verify changes by phone using the number you already have on file.
  • Match invoices to POs, delivery logs, or approved quotes.
  • Use two-person approval for wires and new payees (even in a tiny company).

For a quick look at how expensive billing fraud can get for smaller organizations, see the data roundup in Small Business Fraud Statistics 2026.

Fake SEO experts and shady marketing "guarantees" that drain your budget

What it looks like: An email or call claims they can get you to "#1 on Google," or says your listing will be removed unless you pay. Some pretend to be "Google partners." Others send confusing screenshots and push for immediate full access to your website.

Why it works: Owners know marketing matters, but SEO feels hard to verify. Scammers sell certainty.

Red flags

  • Unsolicited outreach with a "today only" price or threat.
  • Secret methods, vague deliverables, or reports with no clear meaning.
  • Requests for admin access on day one, before a contract exists.
  • Payment requests via wire, crypto, or unusual processors.

Prevent it

  • Ask for clear deliverables (site audit, on-page fixes, content plan, timeline).
  • Request references and real case studies from similar businesses.
  • Give limited access roles first, then expand only if trust is earned.
  • Skip guarantees, because SEO results depend on competition and time (this simple on-page SEO guide helps you sanity-check what an SEO provider proposes).

Phone, mail, and in-person scams that pressure you into quick decisions

These scams use the same fuel: urgency, intimidation, and confusion. Add spoofed caller ID and AI voices, and the scam can feel personal. The goal is to get your staff to pay, share a code, or approve a "renewal" without thinking.

Fake calls that impersonate the IRS, your bank, "IT support," or a delivery company

What it looks like: A caller claims there's fraud on your account, an IRS problem, a package issue, or a security emergency. They demand immediate action. Often they want remote access to a computer, a one-time passcode, or payment to "fix" something.

Why it works: It hits fear. Nobody wants taxes, banking, or shipping to break.

Red flags

  • The caller insists you must stay on the line.
  • They demand secrecy or threaten arrest, closure, or penalties.
  • They ask for MFA codes, passwords, or remote access right now.
  • They refuse call-backs through official numbers.

Prevent it

  • Hang up, then call back using the official number from a statement or a real website.
  • Set a policy: no one shares codes, passwords, or remote access without a ticket and manager approval.
  • Use a script at the front desk: "We don't handle that by phone. Email details to our published address."

Unsolicited services, directory listings, and "you already agreed" sales traps

What it looks like: A "verification" call for your business listing, a vague renewal notice, or a service you "already approved." Some record a staff member saying "yes," then send an invoice.

Why it works: New hires and busy staff try to be helpful. Scammers aim for whoever answers first.

Red flags

  • No clear contract, no scope, no written terms.
  • They won't email details, or they send a generic invoice only.
  • The language sounds like a renewal, but you don't recognize it.
  • Pressure to pay to avoid "collections" or "late fees."

Prevent it

  • Require written quotes and a signed agreement for any purchase.
  • Keep a vendor list, and only allow certain roles to approve vendors.
  • Tell staff never to confirm details on a cold call, including address "verification."

Office supply scams that ship or bill for things you never ordered

What it looks like: Toner, cleaning supplies, first-aid kits, or "automatic refills" show up. Next, an invoice follows. If you push back, they threaten collections, claim you "agreed," or cite fake tracking numbers.

Why it works: Supplies feel small, and arguing feels like a time sink.

Red flags

  • Invoices without a PO number or known contact person.
  • A delivery arrives that nobody ordered, but it looks plausible.
  • Aggressive collection threats within days.
  • A brand name that sounds familiar, but doesn't match your actual supplier.

Prevent it

  • Go PO-only for ordering, even for office supplies.
  • Log deliveries (date, carrier, who received it).
  • Use a return-to-sender process for unordered goods.
  • Dispute charges quickly with the vendor and your payment provider.

Vanity award scams that sell you a trophy instead of real recognition

What it looks like: A letter or email congratulates you for winning "Best of" something. Then comes the catch: pay for a plaque, buy an ad, pay an event fee, or purchase "winner packages."

Why it works: Owners want social proof, and customers like badges.

Red flags

  • You never entered, and nobody can explain judging criteria.
  • The award requires payment to claim it.
  • The organization has no credible history or public list of winners.
  • The email is vague about category, location, or selection process.

Prevent it

  • Verify the award organization, past winners, and selection method.
  • Look for a public nominee list you can cross-check.
  • Set a rule: ignore pay-to-win awards and focus on real reviews and proof.

A strong website can help customers tell you're legit, and help you avoid looking like the scams. Tighten up basics like contact info and credibility elements using these website trust signals.

Money and identity scams that hit your cash flow, credit, and taxes

These scams can hurt long after the first hit, because they create chargebacks, tax issues, or business credit damage. If you spot one, act quickly and document everything (dates, names, emails, phone numbers, and transaction IDs).

Overpayment scams that turn one sale into a big loss

What it looks like: A "customer" overpays by check or card, then asks you to refund the extra. Later, the original payment bounces or gets reversed, but your refund is gone.

Why it works: It feels like good customer service to fix "their mistake."

Red flags

  • They overpay without a clear reason, then want a fast refund.
  • They request the refund by wire, gift card, or a different method.
  • The payer name doesn't match the buyer name.
  • They push rush shipping, even with payment "issues."

Prevent it

  • Wait for full clearing, not just "funds available."
  • Refund only through the original payment method.
  • Use safer payment options for new buyers, especially for large orders.

Business identity theft that opens accounts and loans in your company's name

What it looks like: Someone uses your business name, EIN, address, or public filing info to open credit lines, vendor accounts, or even loans. It can also start with stolen logins from email or bookkeeping tools.

Why it works: Business information is often public, and security controls are often light.

Red flags

  • Surprise bills, new accounts, or collection notices.
  • Credit alerts you didn't trigger.
  • Mail for bank accounts, cards, or vendors you never requested.
  • Customers receive odd "updated payment" messages that you didn't send.

Prevent it

  • Monitor business credit and set alerts where available.
  • Turn on MFA for email, banking, payroll, and domain accounts.
  • Limit who can change legal profiles, banking info, and admin roles.
  • Store key documents securely, and don't email sensitive files without protection.

For deeper context on how cyber incidents affect smaller companies, skim the ITRC 2025 Business Impact Report (PDF).

Fake charity requests that spike after disasters and local news events

What it looks like: A call, email, or social message asks for a donation tied to a disaster, a sick child, or a local cause. It's timed to headlines, and the pressure is emotional.

Why it works: Business owners want to help, and the request feels urgent.

Red flags

  • They demand payment by wire, gift card, or crypto.
  • The mission is vague, and they can't share registration details.
  • No EIN, no real website, or the website has no track record.
  • They won't let you donate through the charity's official channel.

Prevent it

  • Donate only through the charity's official website (typed in manually).
  • Verify registration and basic legitimacy before giving.
  • Set a "no donations from cold calls" policy for the business.

Employee Retention Credit (ERC) scams that can leave you owing the IRS

What it looks like: A promoter promises a big ERC refund, often with a "guaranteed" number. They may push you to sign quickly, take a large percentage, or file claims with weak support. If the IRS later disallows the claim, you could owe the credit back, plus penalties and interest.

Why it works: It mixes hope (cash back) with confusion (tax rules).

Red flags

  • Guaranteed refund amounts without reviewing your records.
  • Pressure around "last chance" deadlines and fast signatures.
  • Refusal to explain eligibility in plain language.
  • A fee structure that rewards filing big claims, not accurate claims.

Prevent it

  • Use a trusted CPA or enrolled agent who will document the claim.
  • Keep payroll records, revenue comparisons, and support documents organized.
  • Verify what's real using official guidance like the IRS Dirty Dozen tax scams for 2026.
  • If you already filed and feel unsure, talk to your tax pro promptly.

Conclusion

Scams thrive on urgency, secrecy, and messy internal processes. The fix is usually simple: set approval rules for payments, require written vendor changes, train staff to verify requests, turn on MFA, and build a habit of calling back using known numbers. Share this list with anyone who answers phones, pays invoices, or manages your inbox. Then review vendors and account access once a quarter, because small checkups prevent big losses.

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