Tithing as a business owner raises practical questions: Do you tithe on revenue or profit? Before or after expenses? The principles matter more than the formula: give first, give from the top, give consistently.
Firstfruits means the offering comes before you know if there's enough. It's not giving what's left over — it's an act of trust that says, God, I acknowledge you as the source before I count the outcome.
Malachi 3:10 is the only place in Scripture where God explicitly invites testing. He's saying: try it. Bring the whole tithe and watch what happens.
Many Christian entrepreneurs tithe personally but treat the business as a secular entity. But if your business is a stewardship assignment, the principle of firstfruits applies there too.