Old is Gold was a good term till last year as per the image shown above:
Which is better for you - New/Old. Simple calculation by us. You will not find it anywhere else, except for confusing calculations and tables by various so called Financial Experts.
* Tax on 15L - New = 1,50,000/-
* Tax on 15L - Old = 2,62,500/-
* Excess Tax - Old = 1,12,500/-
* Exemption/Deduction needed in Old to break even = (1,12,500 ÷ 3) x 10 = 3,75,000/-
** Exemption/Deduction less than 3,75,000/-, New is beneficial, otherwise Old is beneficial.
As such for professionals/ business income the new won't be applicable.
You have professional income from your present employment.
Once opted for New/Old, then you cannot change it like other salaried person. So maybe better for you to stick to Old as long as this system of New & Old exists.