The Act gives way where the agreement is better for you
Section 159(1) lets the Central Government make an agreement with the government of any other country, or of a specified territory, and notify it. Section 159(2) is the same idea for a specified association in India and a specified association in that territory, once the Central Government notifies that agreement.
Section 159(3) says the agreement may cover relief where tax has been paid under both laws, relief to promote trade and investment, avoidance of double taxation without creating a chance of non-taxation or reduced taxation through evasion or avoidance (including treaty-shopping for residents of a third country), and exchange of information.
Section 159(4) is the line that picks the rate. Where an agreement under subsection (1) or a notified agreement under subsection (2) grants relief or avoids double taxation, then, for the assessee to whom it applies, the provisions of this Act apply to the extent they are more beneficial to that assessee.
Read the notified text for the country on the department treaty list. Section 207 does not print those country percents. A department page titled "Tax rates, DTAA v. Income-tax Act" says it contains the Income-tax Act, 1961, as amended by the Finance Act, 2026. That is not the section 207 table. Use it only to find a treaty article. Use section 207, and the tax year 2026-27 TDS table, for the Act figure.