How the income is computed
Start with the annual rent (or expected rent). Deduct municipal taxes actually paid by you to get the Net Annual Value. From that, take a flat 30% standard deduction under Section 24(a) — given regardless of actual spend — and the home-loan interest under Section 24(b). The result is your taxable house-property income.
Self-occupied versus let-out
A let-out property is taxed on its rent as above, with full interest deductible (subject to the ₹2 lakh loss set-off cap). A self-occupied house has nil rental value but still allows up to ₹2 lakh of interest. Deemed-let-out rules can apply if you own several houses — confirm for your case.
A worked example
Example: annual rent ₹3.6 lakh, municipal tax ₹20,000. Net Annual Value ₹3.4 lakh; less 30% (₹1.02 lakh) = ₹2.38 lakh; less home-loan interest ₹2 lakh = ₹38,000 taxable. The 30% deduction is automatic, so you get it even if you spent nothing on repairs. Rent received from a tenant who is your child is taxable to you in the same way. Our team can compute it.