SB and SB SL You use an SB tax code if your annual income from ALL jobs is less than $14,000. Example: George has just finished high school and is working a part-time job at his mum’s cafe earning $4,000 annually as well as a kitchen hand at his brother’s restaurant earning $6,000 annually. His total income for the year is $10,000. The higher income source uses a tax code from above and the lower source uses tax code SB. If George has a student loan he would use SB SL. S and S SL You use an S tax code if your annual income from ALL jobs is between $14,001 and $48,000. Example: George works full-time in his mum’s cafe for 40 hours a week with an annual income of $38,000. George has a lot of credit card debt and to pay it off faster he gets a second job at a supermarket earning $5,000 annually. His total income for the year is $43,000. The higher income source uses a tax code from the above and the lower income source uses the tax code S. If George has a student loan he would use S SL. SH and SH SL You use an SH tax code if your annual income from ALL jobs is between $48,001 and $70,000 Example: Nicki works full-time in a warehouse for 40 hours a week with an annual income of $51,000. Nicki is saving for a holiday so she gets a second job at a supermarket earning $12,000 annually. Her total income for the year is $63,000. The higher income source uses a tax code from above and the lower source uses tax code SH. If Nicki has a student loan she would use SH SL. ST and ST SL You use an ST tax code if your annual income from ALL jobs is more than $70,000. Example: George is a hot shot graphic designer. He makes $80,000 designing websites for major companies. He also has a secondary job that brings in an additional $6,000. His total income for the year is $86,000. The higher income source uses a tax code from above and the lower source uses tax code ST. If George has a student loan he would use ST SL. But wait, there’s more…Just when you thought that the Primary and Secondary tax codes were all you needed to know, we go and throw you a curve ball. Well, these next tax codes are quite particular and really only apply to temporary, casual and seasonal workers.