Expense Ratio Calculator
Calculate the operating expense ratio — total business expenses as a percentage of net sales — with a category-by-category cost breakdown.
Frequently Asked Questions
What is the expense ratio formula?
Expense Ratio = (Total Operating Expenses ÷ Net Sales) × 100. This calculator lets you break total expenses into Cost of Goods Sold, Selling & Distribution, Administrative, and Other Operating Expenses, then shows each category's individual percentage of sales alongside the combined total.
Is this the same as a mutual fund expense ratio?
No — that's a different, unrelated metric. A mutual fund or ETF expense ratio is the annual fee a fund charges investors (e.g. 0.50% of assets per year) to cover management costs. This calculator computes the business/accounting expense ratio: how much of a company's sales revenue is consumed by its operating costs. If you're looking for fund fees, search for a "fund expense ratio calculator" instead.
What is a good operating expense ratio?
Lower is generally better, but the "right" number depends heavily on industry and business model. Asset-light service and software businesses can run well under 50%; labor-intensive service businesses (restaurants, retail, hospitality) often sit between 60–85%. Track your own ratio over time and against direct competitors rather than chasing a universal target.
How does expense ratio relate to operating ratio and profit margin?
Expense Ratio and Operating Ratio are calculated the same way when "expenses" includes COGS — they are often used interchangeably. Operating Profit Ratio = 100% − Operating Ratio (approximately). A rising expense ratio over time, even with growing revenue, means costs are eating into profitability and margins are compressing.
Which expense categories should I track separately?
Most income statements split expenses into Cost of Goods Sold (direct production cost), Selling & Distribution (sales commissions, advertising, shipping), Administrative (office, management salaries, legal, accounting), and Other Operating Expenses (depreciation, R&D, miscellaneous). Tracking each as a separate percentage of sales makes it much easier to spot exactly where costs are growing fastest.
How can a business lower its expense ratio?
Grow revenue faster than costs (operating leverage), automate repetitive administrative work, renegotiate supplier and vendor contracts, cut underperforming marketing spend, or consolidate overlapping overhead after restructuring. Even a small reduction in expense ratio flows almost directly to the bottom line since revenue is unchanged.