To clarify, a sewer authority assessment of $11,666.86 can be treated differently depending on its nature:
Business Expense: If the assessment is for maintenance or repairs, it can be deducted as a business expense in the year it was paid
Capital Improvement: Whether business or personal If the assessment is for an improvement (e.g., installing a new sewer line), it must be capitalized and added to your property's cost basis. This means you can't deduct it right away, but it will make your property worth more. This can make you lose less money when you sell the property.
For personal property, such assessments are generally not deductible as a tax or expense. However, if they are included in your state or local taxes, you might be able to claim a SALT (State and Local Tax) deduction