Insights That Add Up
Issue 12 · Blog Edition
BUSINESS & TAXES, FINANCIAL REPORTS

Is It Worth It? ROI Will Tell You

From ad campaigns to new hires, equipment upgrades to software tools — every investment your business makes should be working for you. But how do you know if something actually paid off? That’s where Return on Investment (ROI) comes in. ROI helps you cut through the guesswork and measure the real-world profitability of any business decision — in plain numbers. In this post, we’ll unpack how to calculate ROI, why it matters, and how to use it to make smarter, more confident investment calls.

Formula:

ROI = (Net Profit from Investment − Cost of Investment) ÷ Cost of Investment ×100

This ratio is typically expressed as a percentage. For example, if you spent $10,000 on a marketing campaign and earned $15,000 in profit from it, your ROI would be:

15,000 − 10,000 ÷ 10,000 × 100 = 50%

That means you earned a 50% return on that investment.

What It Means:

ROI tells you how much profit you made from a specific investment relative to what you spent on it.

It answers the simple but essential question: “Did this investment actually make us money — and how much?”

This can apply to nearly anything in business:

  • A new software platform
  • A digital ad campaign
  • A piece of equipment
  • A training program or new hire

Unlike broader metrics like net profit margin, ROI is project-specific, making it a powerful tool for decision-making and performance review.

Watercolor illustration of a business owner reviewing return on investment

Why It Matters:

Every dollar you spend should contribute to growth, efficiency, or profitability. ROI helps you:

  • Justify or reject new initiatives
  • Prioritize where to allocate budget
  • Compare the performance of different investments
  • Communicate value to stakeholders or investors

High ROI means you’re putting your money to work effectively. Low or negative ROI tells you something isn’t paying off — and needs to be reevaluated or optimized.

Tip: What’s a “Good” ROI?

A positive ROI is the goal — but how high it should be depends on context:

  • Marketing: 5:1 revenue-to-cost is often cited as strong (which can translate to ~400% ROI)
  • Real estate/equipment: 10–20% may be reasonable depending on depreciation and time horizon
  • Software/tools: Break-even or slightly positive ROI may still make sense if the tool enables other long-term gains

Also consider timeframe — a 30% ROI over one month is very different from 30% over two years.

Pro Tip:

ROI is powerful, but it’s not perfect. It doesn’t account for:

  • The time value of money (how long it takes to earn the return)
  • Ongoing costs vs. one-time costs
  • Opportunity cost (what you could’ve done with the money instead)

For more complex decisions, consider pairing ROI with metrics like Payback Period, NPV (Net Present Value), or IRR (Internal Rate of Return)to get a fuller financial picture.

© My Bookkeeping Solution · Cheryl Ledger