The US tax code allows taxpayers to defer taxes by reinvesting income into business operations through depreciation and other deductions. This isn't a loophole but the system working as intended - the government rewards economic growth by letting entrepreneurs reinvest dollars rather than pay immediate taxes. Depreciation schedules let you spread business expenses over time, reducing taxable income in early years.

For example, a $100 lawnmower earning $11 annually can be depreciated to minimize taxes. Front-loading depreciation in profitable years and back-loading in loss years helps optimize tax obligations. Cost segregation studies can reclassify building components into shorter depreciation periods - a $2M property might generate $200K-$300K in first-year deductions by treating fixtures and carpeting as 5-15 year assets rather than 27.5-39 year property.

Leveraged investments offer another deferral path. When investments appreciate or interest rates drop, refinancing lets you extract cash while maintaining the original loan balance. Since borrowed money isn't taxable income, you can use these funds without affecting your tax rate. The key principle: contribute more to the economy than you extract, and the government will happily pretend you're broke. This strategy requires genuine reinvestment - if you're just shuffling paper, pay your taxes.