Underestimating your GTIN count is the most common budgeting mistake in GS1 registration — here's how to count accurately before you apply.
The rule: every distinguishable variant is a separate GTIN
If a customer standing at a shelf can tell two versions of your product apart — by size, flavor, color, or pack count — each of those versions needs its own GTIN. A "family" of products doesn't share one number.
A worked example
A skincare brand launching one moisturizer in 50ml and 100ml, in original and fragrance-free formulas, isn't launching "one product" — that's four distinct GTINs (2 sizes × 2 formulas), before even counting a future gift-set multipack, which would need a fifth GTIN of its own.
Plan 12–18 months out, not just today
Because moving up a GTIN tier later means a second registration or top-up cost, it's usually cheaper to slightly over-provision for variants you're confident you'll launch within the next year, rather than registering the bare minimum today.
See how GTIN count affects your fee tier
The fees guide breaks down how turnover and GTIN count combine to set your registration cost.
Read the fees guide →