Student loan deductions refer to the process of reducing the amount of income that is subject to tax by taking into account any student loan payments that an individual has made during the tax year.

In the United Kingdom, individuals who have taken out student loans to pay for their education may be eligible for a student loan interest tax relief. This relief allows the individual to claim back a portion of the interest paid on their student loan as a tax reduction. The relief works by reducing the amount of income subject to tax, rather than providing a tax refund.

The relief is calculated based on the individual's income and the interest paid on the loan. The amount of relief is calculated based on the income of the individual and the interest they have paid in the tax year, and it reduces the amount of income tax they owe. The relief is based on a percentage of the interest and is calculated by HM Revenue and Customs.

It's worth noting that not all student loans are eligible for interest relief and the relief is subject to change with the budget announcement. It's important to note that student loan repayments are not tax deductible and the relief is only for the interest component of the student loan. It's also important to keep track of the student loan interest payments, as the relief can only be claimed through a self-assessment tax return, therefore it is always recommended to consult with a tax professional before submitting a return.