diff --git a/src/lib/types/mutual-fund.ts b/src/lib/types/mutual-fund.ts
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+/**
+ * Mutual Fund Data Types and Database Schema
+ * Comprehensive type definitions for fund schemes, performance metrics, and investment requirements
+ */
+
+/**
+ * Fund Scheme Types
+ */
+export enum FundCategory {
+  EQUITY = "EQUITY",  DEBT = "DEBT",  HYBRID = "HYBRID",  MONEY_MARKET = "MONEY_MARKET",  LIQUID = "LIQUID",  COMMODITY = "COMMODITY",  INTERNATIONAL = "INTERNATIONAL"}
+
+export enum RiskProfile {
+  LOW = "LOW",  LOW_TO_MODERATE = "LOW_TO_MODERATE",  MODERATE = "MODERATE",  MODERATE_TO_HIGH = "MODERATE_TO_HIGH",  HIGH = "HIGH"}
+
+export enum InvestmentType {
+  SIP = "SIP",  LUMP_SUM = "LUMP_SUM",  BOTH = "BOTH"}
+
+/**
+ * Fund Scheme Database Schema
+ */
+export interface FundScheme {
+  // Identification
+  id: string;
+  schemeCode: string;
+  schemeName: string;
+  fundHouseName: string;
+  ISIN: string;
+  category: FundCategory;
+  subCategory?: string;
+
+  // Fund Details
+  riskProfile: RiskProfile;
+  launchDate: Date;
+  fundSize: number; // in crores
+  unitPrice: number; // current NAV
+  portfolioComposition?: PortfolioComposition;
+
+  // Description
+  description: string;
+  investmentObjective: string;
+  targetInvestors?: string[];
+  fundManager: string;
+  fundManagerName?: string;
+  fundManagerExperience?: number; // in years
+
+  // Flags
+  isActive: boolean;
+  isNew: boolean;
+  isPopular: boolean;
+}
+
+/**
+ * Portfolio Composition
+ */
+export interface PortfolioComposition {
+  equityPercentage: number;
+  debtPercentage: number;
+  goldPercentage?: number;
+  internationalPercentage?: number;
+  cashPercentage: number;
+  otherPercentage?: number;
+}
+
+/**
+ * Performance Metrics
+ */
+export interface PerformanceMetrics {
+  id: string;
+  fundSchemeId: string;
+  asOfDate: Date;
+
+  // Returns
+  oneMonthReturn?: number;
+  threeMonthReturn?: number;
+  sixMonthReturn?: number;
+  oneYearReturn: number;
+  threeYearReturn?: number;
+  fiveYearReturn?: number;
+  tenYearReturn?: number;
+  sinceInceptionReturn?: number;
+
+  // CAGR (Compound Annual Growth Rate)
+  oneYearCAGR?: number;
+  threeYearCAGR?: number;
+  fiveYearCAGR?: number;
+  tenYearCAGR?: number;
+
+  // YTD and Period-specific
+  ytdReturn: number;
+  quarterlyReturn?: number;
+  calendarYearReturn?: number;
+
+  // Benchmark comparison
+  benchmarkIndex?: string;
+  benchmarkReturn?: number;
+  alpha?: number; // excess return
+  beta?: number; // volatility relative to benchmark
+}
+
+/**
+ * Risk and Ratio Metrics
+ */
+export interface RiskAndRatioMetrics {
+  id: string;
+  fundSchemeId: string;
+  asOfDate: Date;
+
+  // Volatility Metrics
+  standardDeviation: number; // annualized volatility
+  variance?: number;
+
+  // Risk-Adjusted Returns
+  sharpeRatio: number;
+  sortinoRatio?: number;
+  calmarRatio?: number;
+  treynorRatio?: number;
+
+  // Duration and Maturity (for debt funds)
+  modifiedDuration?: number;
+  effectiveDuration?: number;
+  averageMaturity?: number;
+
+  // Credit Metrics (for debt funds)
+  creditQualityScore?: number; // AAA, AA, A, etc.
+  defaultRisk?: number; // percentage
+
+  // Fund Health Metrics
+  turnover?: number; // portfolio turnover ratio
+  expenseRatio: number;
+  entryLoad?: number;
+  exitLoad?: number;
+  managementFeePercentage?: number;
+}
+
+/**
+ * Investment Requirements and Eligibility
+ */
+export interface InvestmentRequirements {
+  id: string;
+  fundSchemeId: string;
+
+  // Investment Minimums
+  minimumLumpSum: number;
+  minimumSIP: number; // monthly SIP minimum
+  minimumAdditionalInvestment?: number;
+  maximumSIPAmount?: number;
+
+  // Investment Types Allowed
+  allowedInvestmentTypes: InvestmentType[];
+
+  // SIP Details
+  sipFrequencies?: SIPFrequency[]; // MONTHLY, QUARTERLY, etc.
+  sipDuration?: number; // minimum lock-in period in months
+
+  // Lock-in Period
+  lockInPeriod?: number; // in days
+  lockInType?: 'ELSS' | 'NONE'; // ELSS funds have 3-year lock-in
+
+  // Eligibility
+  minimumAge?: number;
+  maximumAge?: number;
+  residencyRequirement?: string; // NRI, RESIDENT, etc.
+  kycRequired: boolean;
+  accountTypeEligibility?: string[]; // INDIVIDUAL, JOINT, HUF, etc.
+
+  // Additional Requirements
+  panRequired: boolean;
+  aadharRequired?: boolean;
+  bankAccountRequired: boolean;
+  documentRequirements?: string[];
+}
+
+export enum SIPFrequency {
+  WEEKLY = "WEEKLY",  FORTNIGHTLY = "FORTNIGHTLY",  MONTHLY = "MONTHLY",  QUARTERLY = "QUARTERLY",  HALF_YEARLY = "HALF_YEARLY",  YEARLY = "YEARLY"}
+
+/**
+ * Fund Distribution and Dividend Information
+ */
+export interface DividendInformation {
+  id: string;
+  fundSchemeId: string;
+
+  // Dividend Options
+  optionType: 'GROWTH' | 'DIVIDEND' | 'BONUS';
+  dividendFrequency?: string; // Annual, Half-yearly, etc.
+  lastDividendAmount?: number;
+  lastDividendDate?: Date;
+
+  // Dividend History
+  annualDividendYield?: number;
+  payoutRatio?: number;
+  consecutiveDividendPayments?: number; // streak
+}
+
+/**
+ * Fee and Expense Breakdown
+ */
+export interface FeeStructure {
+  id: string;
+  fundSchemeId: string;
+
+  // Direct Fees
+  directExpenseRatio: number; // for direct plans
+  regularExpenseRatio?: number; // for regular plans (includes commission)
+  managementFee: number;
+  administrationFee?: number;
+  custodyFee?: number;
+  auditFee?: number;
+  otherFees?: number;
+
+  // Load Structure
+  entryLoad?: number; // percentage
+  exitLoad?: number; // percentage
+  exitLoadPeriod?: number; // days after purchase
+
+  // Rebate Structure
+  rebates?: RebateStructure[];
+}
+
+export interface RebateStructure {
+  investmentAmount: number;
+  rebatePercentage: number;
+}
+
+/**
+ * Fund Company/House Information
+ */
+export interface FundHouse {
+  id: string;
+  houseName: string;
+  registrationNumber: string;
+  establishmentYear: number;
+  website?: string;
+  phone?: string;
+  email?: string;
+  address?: string;
+  assetsUnderManagement: number; // in crores
+  numberOfSchemes: number;
+  regulatoryStatus: 'ACTIVE' | 'SUSPENDED' | 'CLOSED';
+}
+
+/**
+ * Scheme Holding and Portfolio Information
+ */
+export interface PortfolioHolding {
+  id: string;
+  fundSchemeId: string;
+  holdingId: string; // stock/security identifier
+  holdingName: string;
+  quantity?: number;
+  percentage: number; // % of total fund value
+  sector?: string;
+  holdingType: 'EQUITY' | 'DEBT' | 'DERIVATIVE' | 'CASH';
+  rating?: string; // credit rating for debt securities
+}
+
+/**
+ * Historical Data for Trends
+ */
+export interface HistoricalNAV {
+  id: string;
+  fundSchemeId: string;
+  date: Date;
+  nav: number;
+  navChange?: number;
+  navChangePercentage?: number;
+}
+
+/**
+ * Database Schema Summary
+ */
+export interface MutualFundDatabase {
+  fundSchemes: FundScheme[];
+  performanceMetrics: PerformanceMetrics[];
+  riskAndRatioMetrics: RiskAndRatioMetrics[];
+  investmentRequirements: InvestmentRequirements[];
+  dividendInformation: DividendInformation[];
+  feeStructures: FeeStructure[];
+  fundHouses: FundHouse[];
+  portfolioHoldings: PortfolioHolding[];
+  historicalNAV: HistoricalNAV[];
+}