Trump Org defense lawyer Alan Futerfas: It's a gift. Weisselberg said Trump was "being generous!"

Judge: "You don't pay back a gift."

Curious back-and-forth now that hints at a core issue with this case.

Was Trump's decision to pay for Weisselberg's grandkids' tuition a gift? Remember, Weisselberg said he'd pay back—and he did it by reducing his own taxable income.

Tax auditor's testimony on pause. Jury & witness have left courtroom.

Trump Org's defense lawyers are trying to totally redefine this case, making it seem as if jury will decide tax policy.

Justice Juan Merchan: "I said this would not become... a masterclass on taxation."

We're digging into how Weisselberg lied to shrink his official salary by calling himself an "independent contractor" at times.

Mukaila Rabiu, tax official: When you're an employee, the employer controls what you do. If you're an independent contractor, you decide when you work.

Up on the screen now: Allen and Hilary Weisselberg's NY resident income tax returns. Prosecutors are taking a closer look at how exactly the Trump Org CFO dodged taxes.

He reported $724,006 of income in 2015, including $201k in "business income."

Does that mean they'll convict or acquit the company just as fast? That would be impressive. We'll see in a few weeks.

Next up on the witness stand: a forensic auditor at the New York State Department of Taxation and Finance. He'll probably address how the Trump Org fell short.