When a tax year ends on the 5th of April and a new one begins on the 6th of April, the tax-free allowance in your Trading 212 ISA is automatically reset to £20,000. You do not need to open a new Trading 212 ISA - all you have to do is to accept the new ISA declaration and add funds for the new financial year into your existing ISA with us.
If you choose not to contribute in the new tax year, no further deposits should be made to your Trading 212 ISA.