Dear Querist,
Interest is not fully “refundable”; it reduces taxable income. If the commercial property is let out, the actual eligible loan interest can be deducted under Section 24(b) without any fixed monetary limit.
There is no maximum loan tenure, so a five-year loan is acceptable. Any pre-acquisition/construction interest is claimed in five equal annual instalments.
You are correct that principal repayment for a commercial property does not qualify under Section 80C. You may continue under the new tax regime, but any resulting house-property loss cannot be adjusted against salary or other income or carried forward.
If the property will be used for your own business, Section 24(b) will not apply; the interest must be considered under business-income provisions.
For a more detailed review of your case, you may book a phone consultation.
CA Shubham Goyal