How do I enter tenant improvement expenses that will be reimbursed by the landlord?

You can expense it almost the same way the landlord will, as a capital asset improvement. But i would book it as repairs since you wnill need to track it to issue 1099s to your contra ctors and vendors anfd you will be receiving one from the landlord.

Plan ahead any contractors you can pay by credit card or paypal do not get a 1099 from you

In either case of TI received directly or waived in rent, Money came came in for to offset the improvement cost. It'd go to assets (to be reduced) as technically your landlord aid for that assets and not you/your business (for the amount of TI). i.e. (If Leasehold improvements are $100,000 and $2000 TI then your Leasehold improvement assets are $98,000. Hope this helps!

With regard to the TI funds, I have the same scenario where we paid all the upfront costs for the renovation and the landlord will be reimbursing an agreed upon amount.  I charged all my expenses for the renovation to an expense account I named 'Store Buildout', so where do I record the landlord payment once I receive it to offset the expenses and not show it as income? I considered just showing it as a credit to the same expense account, but feel that is not the best way to approach.

TIA.