Ask HN: Did the tax department go after you, startups?

Early stage startups typically have little to no revenue at all. Many startups don't even have a revenue model in their early years. The founders may not take a salary. But startups do have expenses. Have you had to deal with the tax department when they are suspicious about your business being no revenue for a long period of time while having expenses. Do they understand the startup scene where a company may not even know how to make money. How do you explain to them?