in regard to, with regard to, as regards – Writing Tips Plus – Writing Tools – Resources of the Language Portal of Canada – Canada.ca

Write the noun regard in the singular in the phrases in regard to and with regard to.

The store has called in regard to (not in regards to) the missing hot tub.
With regard to (not with regards to) my recent accident in the hot tub, I have completely recovered.

The final s is correct only in the phrase as regards, where regards is a verb.

As regards the hot tub, I’m making a planter out of it!

Note: In regard to, with regard to and as regards are wordy phrases. Instead, to communicate clearly and effectively, use about, as for, concerning or regarding, or rewrite the sentence.

The store has called about (or concerning or regarding) the missing hot tub.
I have completely recovered from my recent accident in the hot tub.
As for the hot tub, I’m making a planter out of it!

I’m making a planter out of the hot tub!