What are the main card grading companies?

Professional grading companies evaluate trading cards for condition and authenticity, then seal them in protective holders with an assigned grade. While all major graders use similar evaluation principles, their scales, standards, and market perception differ.

The three most commonly used grading companies are PSA, BGS, and CGC.

PSA (Professional Sports Authenticator)

PSA is the most widely recognized grading company in the trading card market and is often considered the industry standard, especially for sports cards.

Key characteristics:

• Uses a 1–10 grading scale
• No subgrades
• Large population reports
• Strong secondary market demand

PSA grades are often favored for liquidity and resale consistency, particularly for vintage and mainstream modern cards.

BGS (Beckett Grading Services)

BGS is known for its more detailed grading approach and use of subgrades. It is especially popular among collectors focused on condition precision.

Key characteristics:

• Uses a 1–10 grading scale
• Includes four subgrades:
  • Centering
  • Corners
  • Edges
  • Surface
• Offers half grades (e.g., 9.5)

BGS is commonly associated with higher scrutiny and is often used for premium modern cards where surface and centering are critical.

CGC (Certified Guaranty Company)

CGC entered the trading card market more recently but is well established in comics and collectibles. It has gained traction with both modern and non-sports cards.

Key characteristics:

• Uses a 1–10 grading scale
• Optional subgrades
• Consistent grading standards
• Popular with modern and specialty sets

CGC is frequently chosen for newer products, niche collectibles, and collectors prioritizing consistency over market dominance.

Are grading standards the same across companies?

While all major grading companies evaluate similar criteria, grading tolerance and weighting can differ.

For example:

• One company may weigh centering more heavily
• Another may penalize surface flaws more aggressively
• Subgrades can expose weaknesses not reflected in a single overall grade

Because of this, the same card can receive different grades depending on the grading company.

Does one grading company mean a card is “better”?

A card’s grade reflects condition, not intrinsic value or desirability. The grading company does not change the card itself—only how its condition is interpreted and presented.

Collectors often choose a grading company based on:

• Card type (sports vs non-sports)
• Era (vintage vs modern)
• Personal preference
• Market familiarity

No grading company is universally “better” for every card.

How this fits into the Grading Guide

Understanding the differences between grading companies helps collectors:

• Interpret grades more accurately
• Compare similar cards across marketplaces
• Decide how and where to submit cards for grading

The next sections of the Grading Guide explain how individual grading factors are evaluated, regardless of the company used.