IRD assurance manager Tony Morris said being within or outside of a benchmark range did not indicate that the business was compliant or non-compliant with its tax obligations.
"It is simply one indicator of performance - for example insufficient product mark-up, difficult trading circumstances or different cost or pricing structures from competitors."
Morris said industry benchmarks were not a new concept and IRD already used them, together with other indicators, to identify businesses that had the potential for "tax risk".
IRD said it would release benchmarks for additional industries later this year.
IRD BENCHMARKS
Cafes and restaurants
Small: Annual turnover: $60,000 - $300,000. Gross margin: 46 per cent to 63 per cent of sales.
Medium: Annual turnover: $300,000 - $800,000. Gross margin: 54 per cent to 65 per cent of sales.
Large: Annual turnover: $800,000+. Gross margin: 59 per cent to 68 per cent of sales.
Fruit and vegetable retailers
Small: Annual turnover: $60,000 - $300,000. Gross margin: 17 per cent to 44 per cent of sales.
Medium: Annual turnover: $300,000 - $800,000. Gross margin: 16 per cent to 31 per cent of sales.
Large: Annual turnover: $800,000+. Gross margin: 16 per cent to 28 per cent of sales.