European WPC80 prices have fallen 37% in three months. Over the same period, the MPC70 market rose 53%, and it’s now up 126% on the year. Both are dairy proteins, and both can end up in the same protein bar or shake. In 2026 they’ve behaved like two different markets.
This guide explains what each protein grade is, why their prices split this year, and how to price the grade you actually buy. It’s written for buyers at sports nutrition brands, dairy and bakery manufacturers, and anyone who signs contracts for whey or milk proteins.
What do the numbers in WPC80, MPC85 and MPI90 mean?
Dairy protein names follow a simple pattern. The letters tell you the type of product and the stream of milk it comes from, and the number tells you roughly how much protein it contains.
| Grade | Full name | Made from | Protein share | Main price driver |
|---|---|---|---|---|
| WPC35 | Whey protein concentrate 35 | Whey | About 35% | Whey supply and food demand |
| WPC80 | Whey protein concentrate 80 | Whey | About 80% | Whey supply and nutrition demand |
| WPI | Whey protein isolate | Whey | 90% or more | Tight specifications and stock |
| MPC70 | Milk protein concentrate 70 | Skim milk | About 70% | Skim milk and SMP value |
| MPC85 | Milk protein concentrate 85 | Skim milk | About 85% | Skim milk and SMP value |
| MPI90 | Milk protein isolate 90 | Skim milk | About 90% | Skim milk and SMP value |
Protein shares follow the grade names. Price drivers from Vesper’s whey and US dairy analyses, October 2026.
Whey is the liquid left over when milk is made into cheese. Filtering it concentrates the protein into whey protein concentrate, and the more it’s filtered, the higher the protein share and the higher the grade. Milk protein concentrates and isolates are filtered from skim milk instead. They contain casein as well as whey protein, which gives them a different taste, texture and behavior in processing.
That difference in origin is the key to this year’s prices. A whey protein’s cost depends on how much cheese is being made and how much protein buyers want. A milk protein’s cost depends on what the same skim milk would earn if it were dried into powder instead.
How dairy protein prices moved in 2026
Here’s how each grade moved, in Europe and the US, over the year and over the past three months.
| Grade | Europe, 12 months | Europe, 3 months | US, 12 months | US, 3 months |
|---|---|---|---|---|
| WPC35 | +69.8% | 0.0% | +85.7% | +33.3% |
| WPC80, regular | +36.4% | -37.3% | +60.6% | -28.3% |
| WPC80, instant | +37.1% | -37.0% | +52.8% | -25.9% |
| WPI | +33.3% | -14.3% | +37.0% | +2.1% |
| MPC70 | +126.1% | +52.9% | +110.5% | +20.6% |
| MPC85 | +101.3% | +33.3% | +63.7% | +26.8% |
| MPI90 | not tracked | not tracked | +52.2% | +19.5% |
Vesper Price Index, EXW, latest prints October 28 to 29, 2026. US WPC35 uses the US WPC34 series from Dairy Market News.
The year-on-year column hides a turn. WPC80 more than doubled between November 2025 and the summer of 2026, then fell sharply from August. Milk proteins rose more slowly but kept going, and by September MPC85 had risen further than WPC80 since November.
Why whey protein prices are falling
The whey side is where prices are falling. Our latest whey analysis describes a WPC80 market that has almost stopped trading. Buying interest is very weak and the gap between what buyers bid and what sellers offer is wide. Buyers keep waiting because prices have fallen week after week, and nobody wants to buy just before the next drop.
That pattern feeds itself. When buyers hold off, sellers cut offers to move stock, which confirms the buyers’ decision to wait. The US has followed a similar path, with WPC80 down 28% in three months.
The WPI market has held up better, falling 14% in Europe over three months. Our analysts put that down to tighter specifications and limited stock. We don’t expect that to last, though. If WPC80 keeps falling, we expect WPI to follow it lower into the new year as buyers look for alternatives once the spread between them gets too wide.
Why milk protein prices are rising
Milk proteins follow a different set of drivers. They’re made from skim milk that a processor could also dry into NFDM or SMP. So when SMP prices are high, a processor needs a high price for milk protein to make it worth producing. This year SMP has been very high: EU SMP rose 77.6% in the year to late October.
That’s why the European MPC85 market is up 101% on the year and US MPI90 prices are up 52%, while whey proteins are falling. At the lower-protein end, the European WPC35 market is 70% higher than a year ago but flat over the past three months.
How the two markets are linked
The two markets are separate, but buyers connect them. When WPC80 was very expensive earlier this year, many manufacturers blended milk proteins into whey formulas to bring costs down, and that extra demand supported milk protein prices.
Now WPC80 is cheaper, so that reason to reformulate is fading. Our analysts see MPC85 as more likely to soften than to keep rising from here, especially as sellers start positioning for the first quarter of 2027.
Putting it to work: how to price the protein you buy
These five steps help you buy the right grade at the right time, rather than reacting to a single “whey price”.
Step 1: write down your exact specification
Note the grade, the protein share, regular or instant, and any extras such as grass-fed or organic. A price that doesn’t match your spec isn’t a benchmark.
Step 2: track the grade and region you buy
Use the price for your grade in your region. This year, European and US prices for the same grade moved by very different amounts, as the table above shows.
Step 3: watch the spread between grades
Track the gap between WPC80 and WPI, and between WPC80 and MPC85. When a spread gets very wide, our analysts expect buyers to switch, and that tends to pull the expensive grade back down.
Step 4: test before you switch
If a cheaper grade looks attractive, run a trial batch before you commit volume. Check taste, texture and processing, not just protein content.
Step 5: buy in layers when the market is falling
In a falling market it’s tempting to wait for the bottom. Buying smaller volumes over several weeks spreads your risk instead of betting on one date.
Each grade above has its own price history and forecast on Vesper, and our market analyses track the spreads between them every week.
Frequently asked questions
What is the difference between WPC80 and MPC85?
WPC80 is a whey protein concentrate with about 80% protein, made from the whey left over from cheesemaking. MPC85 is a milk protein concentrate with about 85% protein, made from skim milk. They come from different streams of milk, so their prices follow different drivers.
Why did WPC80 prices fall in late 2026?
Our whey analysis describes a market with very weak buying interest and a wide gap between bids and offers. Buyers kept waiting because prices fell week after week. European WPC80 fell 37% in the three months to late October 2026, though it was still 36% higher than a year earlier.
Why are milk protein concentrate prices so high?
Milk proteins are made from skim milk that could otherwise be dried into SMP or NFDM, so they tend to be expensive when skim milk powder is. EU SMP rose 77.6% in the year to late October 2026, and European MPC85 rose 101% over the same period.
Will WPI prices follow WPC80 lower?
WPI has held up better because of tighter specifications and limited stock. Our analysts expect it to follow WPC80 lower into the new year if WPC80 keeps falling, as buyers look for alternatives once the spread between them gets too wide.
Can I swap WPC80 for MPC85?
Sometimes, but not one for one. The two proteins behave differently in taste, texture, solubility and processing. Test the functional fit before switching, and price the switch on the grade and region you would actually buy.
