📝 Purchasing, suppliers & strategy · ⏱️ 2 min read

How do I calculate the purchase price of farmed fish...

📝 By Jeffrey Smit · updated 06 Apr 2026

Quick answer
By 2024, farmed fish has captured nearly 60% of the global seafood market, yet many chefs still miscalculate its true cost impact. Purchase prices tell only part of the story - yield rates, trimming loss, and quality positioning all affect your bottom line.

By 2024, farmed fish has captured nearly 60% of the global seafood market, yet many chefs still miscalculate its true cost impact. Purchase prices tell only part of the story - yield rates, trimming loss, and quality positioning all affect your bottom line. The math behind choosing farmed versus wild-caught involves more variables than most operators realize.

The price difference between farmed and wild-caught fish

Farmed fish typically runs cheaper than wild-caught, but the calculation extends far beyond simple per-kilo pricing.

? Example price difference:

Salmon fillet (200g portion):

  • Wild-caught Norwegian salmon: €28/kg = €5.60 per portion
  • Farmed salmon: €22/kg = €4.40 per portion

Difference: €1.20 per portion

Factors that affect your real costs

Purchase price represents just your starting point. These variables determine actual costs:

  • Trimming loss: Wild-caught often requires more trimming due to irregular sizing
  • Shelf life: Farmed fish typically lasts longer, reducing waste
  • Consistency: Farmed fish delivers more uniform portions
  • Seasonal fluctuations: Wild-caught prices swing more dramatically

Factoring trimming loss into your food cost

Trimming loss can either amplify or reduce farmed fish's price advantage. But here's one of the most common blind spots in kitchen management: operators forget to calculate yield percentages into their actual food costs, leading to margin erosion they can't explain.

? Example trimming loss calculation:

Sea bass fillet (150g portion):

  • Wild-caught: €24/kg, 20% trimming loss → €30/kg real price
  • Farmed: €20/kg, 15% trimming loss → €23.53/kg real price

Difference after trimming loss: €6.47/kg = €0.97 per portion

⚠️ Note:

Always include trimming loss in your food cost calculations. The formula: Purchase price / (100% - trimming loss%). So with 20% loss: €24 / 0.80 = €30/kg.

Factoring in quality differences

Wild-caught fish carries premium perception that can impact your menu pricing and margins:

  • Premium positioning: Wild-caught often supports 10-20% higher menu pricing
  • Guest experience: Some diners specifically seek 'wild-caught' options
  • Seasonal specials: Wild-caught fits better with rotating seasonal offerings

? Example margin impact:

Same dish, different positioning:

  • With farmed: €4.40 purchase cost, €24 menu price = 20% food cost
  • With wild-caught: €5.60 purchase cost, €28 menu price = 21.8% food cost

Wild-caught delivers €0.60 more margin per portion despite higher purchase cost.

Seasonal fluctuations and planning

Wild-caught prices swing more due to seasons and catch volumes. This demands different purchasing and menu approaches:

  • Fixed menu: Farmed fish offers more price stability
  • Seasonal menu: Wild-caught aligns better with changing offerings
  • Contract pricing: More feasible with farmed fish suppliers

Choosing farmed vs wild-caught

Your decision depends on concept and target market:

? Choice matrix:

Choose farmed for:

  • Fixed menus with stable pricing
  • High-volume operations
  • Strict food cost targets

Choose wild-caught for:

  • Premium market positioning
  • Seasonal menu rotations
  • Sustainability-focused guests

How do you calculate the real costs of farmed vs wild-caught fish?

1

Gather purchase prices and trimming loss percentages

Note the price per kilo of both options from your supplier. Measure or ask for the trimming loss percentage - wild-caught often has 15-25% loss, farmed 10-20%. This difference can significantly affect your food cost.

2

Calculate the real kilo price after trimming loss

Use the formula: Purchase price / (100% - trimming loss%). For example: €24/kg with 20% loss = €24 / 0.80 = €30/kg real price. Do this for both options to compare fairly.

3

Calculate what this means per portion and per month

Multiply the difference per portion by your average sales. For example: €0.50 difference per portion × 200 fish dishes per week × 4.3 weeks = €430 per month. This shows the impact on your total food cost.

✨ Pro tip

Run a 72-hour side-by-side cost analysis before making permanent switches. Track not just purchase prices, but also trimming waste, prep time, and guest feedback on identical dishes using both farmed and wild-caught options.

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Frequently asked questions

Is farmed fish always cheaper than wild-caught?
Usually, but not always. Farmed fish purchase prices typically run 15-30% lower, but differences in trimming loss and shelf life can narrow that gap. Always calculate the real cost per portion after factoring in yield rates.
How do I factor trimming loss into my food cost?
Divide your purchase price by the yield percentage. With 20% trimming loss, you have 80% yield, so €24/kg becomes €24 / 0.80 = €30/kg real price. Include this adjusted cost in all your food cost calculations.
Can I mix wild-caught and farmed fish on the same menu?
You can, but consistency in taste and presentation becomes challenging. If you go this route, calculate using the weighted average cost of both options based on your usage patterns. Always communicate transparently to guests which type you're serving.
Should I adjust menu prices after switching to farmed fish?
Not necessarily. Many guests won't detect the difference with proper preparation. You can either use the lower purchase cost to improve margins or reduce prices slightly to gain competitive advantage.

⚠️ EU Regulation 1169/2011 — Allergen Information https://eur-lex.europa.eu/eli/reg/2011/1169/oj

The allergen information on this page is based on EU Regulation 1169/2011. Recipes and ingredients may vary by supplier. Always verify current allergen information with your supplier and communicate this correctly to your guests. KitchenNmbrs is not liable for allergic reactions.

In the UK, the FSA enforces allergen regulations under the Food Information Regulations 2014.

ℹ️ This article was prepared based on official sources and professional expertise. While we strive for current and accurate information, the content may differ from the most recent regulations. Always consult the official authorities for binding standards.

Sources consulted

Food Standards Agency (FSA) https://www.food.gov.uk

The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.

JS

Written by

Jeffrey Smit

Founder & CEO of KitchenNmbrs

Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.

8 years kitchen manager at 1NUL8 Group Rotterdam
Expertise: food cost management HACCP kitchen management restaurant operations food safety compliance

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