A church coffee bar does not need one permit. It needs separate answers from four different offices: the health department, the state's taxing authority, the insurance carrier, and whoever in the county decides what a room is allowed to be used for. None of those four conversations are about being a church specifically. A retail shop opening the same bar in the same county has the same four conversations.
What changes the shape of each one is three questions: is the coffee sold or given away, is it open to the public or members only, and does it run every week or only on occasion. Those three answers decide which office cares and how much. Here is what each office is actually asking, so you know what you are walking into before you call anybody.
What makes coffee service count as food service?
There is no single coffee-service law to look up, because there is no single food-service law. The FDA publishes a model Food Code, and its own description of it is blunt: it is "offered for adoption by local, state, and federal governmental jurisdictions," not a statute that binds any of them on its own. Counties pick a version, amend pieces of it, and enforce it on their own schedule. That is the actual reason your county's health department gives a different answer than the one two counties over, and it is why a consultant who quotes you a rule without asking your county first is quoting someone else's county.
The question that drives the answer is usually narrower than "do we need a permit": does the coffee get sold, and is it open past the people who already belong to the church. A members-only, no-charge coffee hour reads very differently to most health departments than a counter open to the street every Sunday morning.
Does being a nonprofit get you out of collecting sales tax?
Usually not by itself. Avalara's compliance guide for nonprofits puts it plainly: "Being exempt from income tax does not make an organization automatically exempt from collecting or paying sales tax." Income-tax exemption and sales-tax exemption are two different applications to two different offices, and the second one usually has to be requested, not assumed from the first.

So a church that has never sold anything retail before a coffee bar is a new filer in the eyes of its state's revenue department, the same as any new shop would be. That filing is usually small, but it is a real step with its own form, and it is worth doing before the first dollar changes hands rather than after an auditor asks about it.
Does your liability policy already cover hot drinks?
Brotherhood Mutual, which insures churches specifically, frames the exposure this way: strict liability "requires the maker of a defective product to assume legal responsibility for a loss, even if the maker did not act negligently." A hot drink handed across a counter fits that description whether or not money changed hands for it, and a policy written for a building full of pews was not necessarily written with a counter serving drinks inside it in mind.
The fix is a phone call before a form: ask your carrier whether food and beverage service already sits inside your current policy or needs its own rider. Most churches find out which one is true the week they start serving, which is the wrong week to find out.
Who actually answers this for your church?
Not me, and I want to be honest about why. I can tell you what the four conversations are and why each one exists, because that part is true everywhere. I cannot tell you what your county's health department will say about a counter inside a sanctuary building, because I have never read your county's code, and I would be guessing if I handed you an answer dressed up as one.
What I can do is the part that is actually mine: help you work out whether a coffee bar is worth having these four conversations in the first place, through our consulting work with churches, and point you toward the lower-commitment path first, a cart or a limited-hours counter, so your church finds this out on a small bet rather than inside a build-out it has already finished. What a church coffee program involves day to day is the piece to read once your four answers are in. If the dollar side matters more to you right now than the paperwork does, what it actually costs to open one and what to charge once it is open are the next two questions most churches ask, in that order.
Bring the four answers to the first conversation, and almost everything left to decide is just coffee.



