You will be upgraded to a higher KrisShopper membership tier once you reach the minimum qualifying spend required for that tier.
Once upgraded, your new tier status will be valid for 1 year from the date you qualify.
How tier upgrades work (example)
You joined KrisShopper on 4 April 2022.
You spent S$2,000 on 1 May 2022 and S$3,000 on 5 July 2022.
Upon reaching the required qualifying spend, you were upgraded to Insider on 5 July 2022.
Your Insider tier is valid from 5 July 2022 to 31 July 2023.
If you spend an additional S$6,000 by 30 May 2023, you will be upgraded to Icon at the point you meet the qualifying spend.