No, not all Japanese Wagyu is A5. The confusion is understandable because A5 dominates international marketing and premium product listings. Wagyu and A5, however, describe different things: Wagyu relates to recognised Japanese cattle breeds, while A5 is a grade awarded to a carcass after evaluation.
Wagyu can be A3, A4, A5 or carry other letter-number combinations. Understanding this prevents lower grades from being mistaken for fake or poor-quality Wagyu.
Wagyu is the category; A5 is the grade
Japanese Black, Brown, Shorthorn and Polled are the principal recognised Wagyu breeds. A carcass does not stop being Wagyu because it receives A4 or A3.
The letter A, B or C describes yield; the number 1–5 describes quality. A3 therefore means yield A and quality 3, A4 means yield A and quality 4, and A5 means yield A and quality 5.
What changes between A3, A4 and A5?
Quality considers marbling, meat colour and brightness, firmness and texture, and fat colour and quality. The lowest criterion constrains the final quality grade.
For marbling, BMS 3–4 corresponds to quality grade 3, BMS 5–7 to grade 4 and BMS 8–12 to grade 5.
What is A3 like?
A3 can show clear marbling without approaching extreme A5 density. For diners used to premium European beef, it may offer a useful bridge between a meat-forward steak and very rich Japanese Wagyu.
What does A4 offer?
A4 often provides an attractive balance. BMS 5–7 can produce substantial intramuscular fat without necessarily reaching the intensity of BMS 10–12. Diners who want a larger portion or more muscle flavour may prefer it.
What makes A5 different?
A5 combines yield A and quality 5. Its marbling criterion covers BMS 8 through 12, so A5 itself includes a range of intensities.
Does A5 always mean BMS 12?
No. A5 can carry BMS 8, 9, 10, 11 or 12, provided all other quality criteria also reach grade 5.
Does A5 always taste better than A4?
“Better” depends on preference. Official grading is objective, but enjoyment is personal. Some diners love extreme richness; others prefer more obvious muscle character. See our A4 vs A5 comparison.
Can A3 be authentic Japanese Wagyu?
Yes. Authenticity depends on breed, origin and traceability, not on reaching the maximum quality grade.
Why do export markets show so much A5?
Gourmet export markets naturally highlight spectacular, high-value products. This can make international shoppers see far more A5 than they would expect across the entire Japanese beef market.
Why lower grades are not failed A5
A3 and A4 should not be treated as carcasses that simply missed the only grade worth buying. The Japanese system deliberately describes several levels of quality, and each can produce a different balance of marbling, muscle character and richness. For a shopper, that means the grade is useful descriptive information rather than a pass-or-fail authenticity test.
This is also why comparing price requires context. A lower grade can still come from well-documented Japanese Wagyu, while cut, origin, portion size and intended cooking method may matter more to the eating experience than chasing A5 alone.
Which grade is best for a first tasting?
A5 is logical if you want to experience extreme marbling. A4 may suit somebody who wants more balance. Cut and portion size matter just as much.
Grade does not replace cut
Ribeye, striploin and tenderloin from the same A5 carcass do not behave identically. Anatomy still controls texture, fat distribution and cooking.
Grade does not replace origin
A5 is not a regional designation. Kobe, Miyazaki, Kagoshima and other brands apply separate origin and production requirements.
How to compare A3, A4 and A5 offers
Check origin and traceability first, then grade and BMS, followed by cut, weight and format. Consider the serving size you actually need rather than buying the highest number automatically.
The conclusion
Japanese Wagyu does not equal A5. A3, A4 and A5 are grading results. A5 is the maximum quality grade within yield A, but lower grades remain genuine Wagyu and may suit particular tastes better.
Frequently asked questions
Can Wagyu be A3?
Yes. Wagyu describes breed identity; A3 is one possible grade.
Does A4 have less marbling than A5?
In BMS terms, grade 4 uses 5–7 while grade 5 uses 8–12.
Is A5 always BMS 12?
No. A5 can fall anywhere from BMS 8 to 12.
Is A5 always the best purchase?
No. Preference, cut, portion, occasion and budget all matter.
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