add NIC salary thresholds for 2020/21 tax year
Add NIC salary thresholds for 2020/21 tax year from https://www.gov.uk/guidance/rates-and-thresholds-for-employers-2020-to-2021#paye-tax-and-class-1-national-insurance-contributions.
Closes #22 (closed)
Add NIC salary thresholds for 2020/21 tax year from https://www.gov.uk/guidance/rates-and-thresholds-for-employers-2020-to-2021#paye-tax-and-class-1-national-insurance-contributions.
Closes #22 (closed)