Partnership LLC but using my personal vehicle for business use

[zonakings]

Based on other posts it seems clear that I can deduct the business miles on my personal vehicle and my home office (used for business home base for all the office work, equipment and materials storage) for my partnership LLC (partner is non-spouse). Please correct me if I'm wrong. I intend to deduct the mileage and the office from my personal taxes (filing jointly) but I am unclear on which form to deduct them on. 

This is my first year of taxes on this business and I expect to receive a schedule k-1 from my partnership CPA any day; I intended to enter that simply on the k-1 form. Also for additional context, my wife has a separate LLC in just her name so we do all that entry on our joint taxes on the "self employed work summary".

So what I'm seeking help on is understanding where to claim these deductions. Is there is a separate form (that I can't seem to find) where I can simply deduct my business mileage and office or do I have to setup a simplified "self employed work summary" on my personal taxes for my partnership, not input any income/loss or maybe include the k-1 or only include these deductions? I hope that's clear, I feel lost enough on this that I fear my question is a bit of a meandering one.

[RobertB4444]

You can't deduct home office or mileage deductions on your personal return unless you are self-employed.  The LLC needs to deduct these things.

If the partnership K1 generates self-employment income for you then you can create a schedule C in the tax return for corresponding deductions.  Check with your accountant to see if you are receiving self-employment income on your K1.

If the LLC is not generating self-employment income for you then you are not entitled to the deductions for home office or mileage.  In order for you to get the benefit of these things the LLC should reimburse you for the cost of them and then the LLC gets the deduction for both.

@zonakings 

[zonakings]

Thanks for the input, can you help me understand what is different about my situation from the one in this post? https://ttlc.intuit.com/community/business-taxes/discussion/partnership-vehicle-deduction/01/633428#...

That thread indicates they can choose to take the vehicle deduction in the partnership return or their personal taxes, right? 

Also, since my partnership/business was new last year and has startup costs, We will have a net loss on the business and took no income so the last paragraph of your response seems to apply.

[RobertB4444]

Unfortunately that thread is from prior to 2018 when the tax law changed to disallow employee business expenses.  It doesn't apply because of the Tax Act of 2018.

You used to be able to take mileage and home office deductions as an itemized deduction on your tax return.  You can't anymore (at least until 2025).

@zonakings