Question about carb labelling and what counts

[MrsHuntGeneNotJeremyObviously]

Have titled that badly, but if you buy something which says carbs - 5g, of which sugar 2g, do you just count the 2g in your daily allowance or 5g.
Did post in low carb diets but reposting for traffic here.
Tia

You would count the 5g

In terms of calculating net carbs, you would deduct any dietary fiber or sugar alcohols from the 5g

Thank you