As of now, pre-tax contributions to HSAs will count toward the tax calculation. Eliminating, reducing, or moving contributions to post-tax will help lower plan costs subject to the tax. An employer eliminating HSA contributions furthers the strategy of reducing the plan design value of the core group health plan, but in turn erodes their support of consumerism, says Gowen, adding that such a tactic would require careful communications. Alternatively, he adds, making HSA contributions uniformly through the year rather than by lump sum would be less disruptive than eliminating contributions.