# The Education (Student Loans) (Repayment) Regulations 2009, Regulation 8B: How to calculate repayment threshold variable


The repayment threshold variable is, in relation to a repayment threshold year, the sum of—
(a) one, and
(b) the percentage increase, expressed as a decimal, in the retail price index between the two Marches immediately before the commencement of the previous repayment threshold year.
Example
2.4% is the percentage increase in the retail price index.
2.4% expressed as a decimal is 0.024.
The sum of 1 and 0.024 is 1.024.
The repayment threshold variable is 1.024.

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Source: https://www.legislation.gov.uk/uksi/2009/470/regulation/8B (the official version)
Page: https://openlegislation.uk/education-student-loans-repayment-regulations-2009/regulation-8B
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.