Deferrals start 7/1, PY is full year--calc match?

Plan is effective 1/1/21, but deferrals are effective 7/1/21.

per doc, match is cal'd on a plan year basis.

Do we calculate the match using all the comp, or just the comp after 7/1?

Per the plan doc, the full plan year compensation; presuming we are not considering pre-entry compensation exclusions, but for those affected by such you would want to double-check that you are correctly granting entry dates if they had otherwise satisfied eligibility by the 1/1 effective date.