I co-own an two-member LLC with my wife. We're in the US.
We own a car, and rent a home.
For operating our LLC, we'll use a separate room exclusively and regularly for business use only (admin and managerial stuff). We'll use our car for occasional business use as well.
As far as I know, we can deduct a portion of our rent and car-related expenses.
But I'm not sure exactly how. For example, (1) when we pay rent, do we pay the portion for business use using the funds in our LLC bank account (and the remaining using the funds in our personal account)? I feel like paying the full rent from my personal account only (or the other way around) doesn't feel right. (2) when we pay for gas, do we do the same (paying using two different sources of funds)?