Does UPE reduce self-employment income and therefore SE tax?

Does UPE reduce my self-employment income and therefore my SE tax?  I have home office rent exp that I can take on my multi-member LLC as unreimbursed partnership expenses . . . or I can submit my home office rent exp as a reimbursement and show the rent expense on the LLC / partnership return. Do both of these reduce my self-employment taxable income or just the latter?