Maximum Isa Allowance 2025/26. You could save £10,000 in one cash isa, £3,000 in another cash isa and £7,000 in a stocks and shares isa in one tax year. Whilst the isa and junior isa subscription limits are both unchanged and frozen at their current levels until 2030, there have been some tweaks around the edges over the past.
The isa allowance is the most you can add into an isa each year. Your isas will not close when the tax year finishes.