For tax year 2018, what is the maximum contribution to a Health Savings Account (HSA) for individuals with self-only coverage?

The maximum contribution to a Health Savings Account (HSA) for individuals with self-only coverage in tax year 2018 is indeed $3,450. This amount reflects the guidelines established for that specific tax year by the IRS. A Health Savings Account is designed to allow individuals who are covered by high-deductible health plans to save for medical expenses on a tax-advantaged basis.

To determine the correct amount, it is important to reference the IRS limits set annually for HSA contributions. In 2018, the limit for self-only coverage was set at $3,450, which is a raise from previous years. This figure is adjusted periodically to reflect inflation, but for the tax year in question, $3,450 is the definitive maximum contribution amount.

The other amounts listed were either set for different coverage types or different years, which does not apply in this context. For instance, the limits for family coverage were greater, and any figures beyond the set $3,450 do not reflect IRS regulations for self-only coverage in 2018.