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Why doesn’t loan principal reduce income?

In the U.S., for farmers who begin receiving Social Security before full retirement age, the deciding factor is not the cash in the bank but the profit shown on the tax return. Even if most of the milk revenue goes to the bank, farmers who borrow to build a new barn, buy milking equipment, or expand their herd can still report strong earnings because principal payments on those loans are not treated as expenses.

On the U.S. tax form Schedule F (Farm Profit or Loss), only the interest portion of a loan payment can be deducted. Depreciation taken for barns and equipment may also be deductible, but principal repayments do not directly reduce profit. As a result, a business that earns $400,000 in milk sales and spends $250,000 on feed, labor, fuel, veterinary care and interest can still report a solid net profit even if little cash is left in the account.

How does the risk of an early retirement cut arise?

In many cases, that profit is added to the farmer’s net self-employment income and counted as income for both tax and retirement records. In other words, even if bank cash runs low, earned income can still look high in the Social Security system.

Earnings limit for 2026

For people who start taking monthly benefits before reaching full retirement age, the limit in 2026 is set at $24,480. For every $2 earned above that threshold, $1 is withheld from Social Security benefits. A different rule applies in the year a person reaches full retirement age; after that age, the earnings test ends.

Meanwhile, filing at age 62 can reduce the planned monthly benefit by up to 30% for people whose full retirement age is 67. By contrast, those who wait past full retirement age can earn delayed retirement credits of 8% a year until age 70. Benefits withheld because of the earnings test are not lost forever; they are later recouped when the monthly benefit is recalculated.

Which years does depreciation timing matter most?

The tax year in which a new barn or eligible equipment is placed in service, along with choices such as bonus depreciation or Section 179, can shift Schedule F profit from one year to another. The same farm, with the same loan and herd structure, can face a different result in the Social Security earnings test simply because the timing of depreciation changed.

According to experts, producers planning to expand need to model two items together:

  • Separate projections of farm profit on the tax return and net self-employment income for the years when loan repayments are due.
  • If early Social Security claiming is being considered, large purchases and depreciation elections should be calculated alongside the earnings test.

The result shows that cash flow and tax profit are not the same thing. Especially on dairy farms growing through debt, financial pressure can rise while the reported income on paper remains unexpectedly high.

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