Total Customers
Total Loan Amount
Overall Default Rate
Total Default Amount
High-Risk Customers
Avg Loan-to-Income
The analysis revealed that low-income borrowers taking large loans create a compounding risk — a default rate exceeding 70% in that single segment alone. Yet this group was being approved at nearly the same rate as safer segments.
The risk wasn't just high LTI or low income in isolation — it was their intersection. Identifying this compound risk profile became the foundation for every strategic recommendation in the report.
-- Default rate by income segment and loan burden SELECT IncomeLevel, LTIBand, COUNT(*) AS TotalCustomers, SUM(CASE WHEN LoanStatus = 'Default' THEN 1 ELSE 0 END) AS Defaults, ROUND( SUM(CASE WHEN LoanStatus = 'Default' THEN 1.0 ELSE 0 END) / COUNT(*) * 100, 2 ) AS DefaultRate, SUM(LoanAmount) AS TotalExposure FROM LoanPortfolio GROUP BY IncomeLevel, LTIBand ORDER BY DefaultRate DESC; -- Highest risk segment isolation SELECT * FROM LoanPortfolio WHERE HomeOwnership = 'RENT' AND IncomeLevel = 'Low' AND LoanPurpose = 'Debt Consolidation' AND LTI > 0.40 AND Age BETWEEN 25 AND 34;
import pandas as pd import seaborn as sns import matplotlib.pyplot as plt # Default rate heatmap – income vs LTI band pivot = df.pivot_table( values='DefaultFlag', index='IncomeLevel', columns='LTIBand', aggfunc='mean' ) * 100 sns.heatmap(pivot, annot=True, fmt='.1f', cmap='RdYlGn_r', linewidths=0.5) plt.title('Default Rate % – Income vs LTI Band') plt.tight_layout() plt.show() # Portfolio loss bridge categories = ['Total Loan', 'Default Loss', 'Net Value'] values = [312, -77, 235] colors = ['#06BEC4', '#E66C37', '#06BEC4'] plt.bar(categories, values, color=colors) plt.title('Portfolio Loss Bridge (₹M)') plt.show()
// Default Rate % Default Rate % = DIVIDE( CALCULATE(COUNTROWS(Loans), Loans[Status] = "Default"), COUNTROWS(Loans) ) * 100 // Composite Risk Score per customer Risk Score = VAR LTIRisk = IF(Loans[LTI] > 0.40, 0.35, IF(Loans[LTI] > 0.30, 0.20, 0)) VAR IncomeRisk = IF(Loans[IncomeLevel] = "Low", 0.30, IF(Loans[IncomeLevel] = "Medium", 0.15, 0)) VAR TenureRisk = IF(Loans[EmpYears] <= 5, 0.20, 0) VAR OwnerRisk = IF(Loans[HomeOwnership] = "RENT", 0.15, 0) RETURN LTIRisk + IncomeRisk + TenureRisk + OwnerRisk // Default Exposure % of Total Default Exposure % = DIVIDE( CALCULATE(SUM(Loans[LoanAmount]), Loans[Status] = "Default"), SUM(Loans[LoanAmount]) ) * 100
Reject or manually review all loans with Loan-to-Income ratio above 40%. Cap approval at LTI 30% for low-income applicants.
Reduce high-burden defaultsApply stricter approval criteria and lower limits for Debt Consolidation loans, especially for renters under 35.
Lower purpose-driven exposureIntroduce additional verification, larger down payment requirements, or co-applicant mandates for the rent + low-income profile.
Mitigate highest-risk segment