Based on Ellen White's writings, tithe is to be paid on "all increase," which includes both business and personal income. Here are the key points from her books:
- "He claims as His just due a tenth of their income, be it large or small; and those who withhold this, commit robbery toward Him, and cannot expect His prospering hand to be with them." (Gospel Workers, p. 222.2)
- "The consecration to God of a tithe of all increase, whether of the orchard and harvest field, the flocks and herds, or the labor of brain or hand..." (Education, p. 44.2)
- "The Israelites were taught to devote a tithe of all their income to the service of the sanctuary." (Christ’s Object Lessons, p. 300.3)
This means that tithe is to be paid on all forms of increase or income, whether it comes from business profits, wages, or other sources. The principle is that a tenth of all that God has prospered you with—regardless of the source—is to be returned to Him.
If you need more specific guidance on how to calculate tithe from business income versus personal income, let me know!
References:
- White, E. G. (1915). Gospel Workers, p. 222.2.
- White, E. G. (1903). Education, p. 44.2.
- White, E. G. (1900). Christ’s Object Lessons, p. 300.3.