Existing tax slabs under new tax regime are: 0 - Rs 3,00,000 - 0%, Rs 3,00,001-Rs 6,00,000-5%, Rs 6,00,001-Rs 9,00,00-10%, Rs 9,00,001- Rs 12,00,000-15%, Rs 12,00,001-Rs 15,00,000- 20% and Rs 15,00,001 and above - 30%