1. Buy a car 6k lb use it 50% for business before 12/31. Even if you finance it . Prepay doesn’t count because car is not in business use.
2. Prepay rent, ad and insurance or services?
3. If receive prepaid rent, you don’t have to report all in tax as it’s not revenue yet. Check cpa?
4. Donating cash or properties (you fill out value)
5. Buy equipment you need for next year for example cell phone
6. Augusta Rule, you rent your property to your cooperation for less than 14 days in a year you can write off the rent income amount (host a company party, meeting, cost is if the same area rental) without report the income
7. Rental professionals write off a lot income using depreciation of property, so buy big commercial property.
8. Cost segregation could get commercial property depreciation much more than just regular rental.
9. If you flip the house buy this year so you own it and close next year for tax benefit(?).