I wouldn't get too excited about this. The economy is still weak. The last growth figure was 0.1%.
The increase in tax revenue can be accounted for by fiscal drag, frozen personal allowances bringing more people into the taxable income bracket and higher tax brackets, some increase in wages which have the same effect, and businesses reporting gains earlier to beat the increase in capital gains related tax to be implemented in April this year.
Additionally, interest payable on index linked bonds have reduced because of base rate cuts during 2025-26, savings from this boost the headline rate of incoming revenue.
As the increases in tax have taken money out of the economy and we don't know if, when and where this 'surplus' is to be reinvested by the government, we don't know if it will increase economic activity. leading to growth in the next year.
We also don't know how much new money the government intends to spend into the economy. If it continues to depend on taxation and restricts its bond sales we'll end up with money in short supply.