A trustee of a care and improvement fund shall receive $5 for each day actually employed in the duties of the trust, but not exceeding $100 in any one year. The fees shall be paid out of the general funds of the association until the trust fund reaches $100,000, or $2,000 for each acre of the cemetery. After that time the fee shall be paid out of the income fund. A corporation acting as trustee may receive for its services any yearly compensation agreed upon not exceeding five percent of the income or $100 of the income if the trust fund is less than $20,000.