TAG Centering Standards: Exact Tolerances and How to Meet Them

TAG uses computer vision to measure card centering with high precision, making centering standards uniquely strict and transparent. Here’s what you need to know about TAG’s centering tolerances by grade, and how to check your card before submitting.

How TAG Measures Centering

TAG (Technical Authentication & Grading) analyzes both the front and back of your card using image analysis. This technology calculates the precise centering ratio, eliminating human error and subjectivity. TAG reports centering as a specific subscore within its 1-1000 grading scale, which maps directly to a 1-10 grade.

TAG Centering Tolerance by Grade

TAG 10 (Gem Mint): Requires near-perfect centering. The computer vision system is extremely strict, and even minor off-centering can prevent a card from achieving a 10. Exact centering ratios are not publicly published, so verify TAG’s latest standards before submitting.
Other Grades: TAG uses algorithmic measurement for all grades, with lower centering tolerance as the grade decreases. The specifics for each grade level are not detailed in published sources, so always check TAG’s current guidelines.

Because TAG’s standards are so precise, it’s essential to know your card’s exact front and back centering before submitting.

How to Measure Your Card’s Centering for TAG

Use a digital tool like Midpoint to measure your card’s centering from a single photo. Midpoint detects borders and calculates exact front and back centering percentages, mirroring the type of analysis TAG performs. This lets you preview how your card is likely to score on centering before you send it in.

Other Grading Factors to Consider

Centering is only one part of TAG’s overall grade. Corners, edges, and surface also play a significant role in the final grade. Even with perfect centering, flaws in these other areas can lower your card’s overall score.

Measure your card's exact front and back centering in Midpoint - free to start - so you know its grade before you pay to submit.

Try Midpoint

FAQ

What centering is required for a TAG 10 grade?

TAG 10 requires near-perfect centering, measured precisely by computer vision. Exact ratios are not published, so check TAG’s latest standards and measure your card’s centering in Midpoint.

How does TAG measure centering compared to other graders?

TAG uses computer vision to calculate exact centering ratios for both front and back, making its process more transparent and strict compared to manual grading.

Can I check my card’s centering before submitting to TAG?

Yes, you can use the Midpoint app to measure your card’s exact centering from a photo, giving you an idea of its likely TAG centering subscore.

Does centering alone determine my card’s TAG grade?

No, centering is just one subgrade. Corners, edges, and surface condition are also critical to the final TAG grade.

Are TAG’s centering tolerances published for each grade?

TAG does not publish precise centering ratios for each grade. Always confirm their current standards and measure your card’s centering before submitting.