The new TDS, and being a partner as an NRI
A recent change affects the cash flow. From the 2025-26 financial year, a new provision, Section 194T, requires the firm to deduct 10% TDS on a partner's remuneration, interest, commission or bonus once it exceeds ₹20,000 in the year, whereas before there was no TDS on payments to partners. So you will now see tax withheld on your interest and remuneration from the firm, which you reconcile on your return. For a non-resident partner there is an open question, not yet settled by the department, whether this new Section 194T applies, or whether the non-resident withholding under Section 195 governs instead; the better view is that Section 195 should apply to you, which also preserves any treaty benefit, but it is worth handling with that uncertainty in mind.
On whether you can be a partner at all, you can, subject to the exchange-control rules. An NRI can be a partner in a firm on a non-repatriation basis, provided the firm is not in a barred activity such as agriculture, plantation, real estate as a business, or print media, and can be a partner in an LLP subject to the foreign-investment conditions, with the rule that at least one designated partner of an LLP must be resident in India. A practising CA keeps your profit share exempt, taxes the interest and remuneration correctly, handles the new withholding and the treaty position, and confirms the exchange-control footing.