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Portfolio Rebalancing Calculator

Restore target asset allocation by calculating exact buy and sell amounts without unnecessary tax drag.

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Asset Allocation & Risk Governance

Asset Allocation & Portfolio Rebalancing Calculator

Measure portfolio drift across Equity, Debt, Gold, and Cash. Simulate full buy/sell rebalancing orders, or deploy fresh SIP capital to rebalance without triggering capital gains taxes.

Asset Classes & Target Allocation

Enter your current rupee value and target allocation percentage for each asset class. Target percentages must sum to 100%.

# Asset Class Current Value (₹) Current % Target %
Total Portfolio: ₹0 100% 100%
Target Sum: 100%

Rebalancing Settings & Fresh Cash Inflows

Standard institutional 5% rule
Deploy SIP/bonus without selling

Rebalancing Analysis & Orders

Portfolio Status Balanced
0.00% Drift Portfolio asset weights are closely aligned with your target policy.
Total Portfolio ₹10,00,000 Current market value
Rebalancing Turnover ₹0 Capital to trade (Buy = Sell)
Total Sells Needed ₹0 Overweight trimmed
Total Buys Needed ₹0 Underweight funded
Asset Allocation Comparison
Current Weighting
Target Policy

Strategy A: Full Rebalance Orders (Zero New Capital)

Execute internal transfer by trimming overweight holdings and reinvesting proceeds:

Asset Class Action Order Amount (₹) Drift
Tax Friction Alert: Selling equity may trigger 12.5% LTCG / 20% STCG; debt funds are taxed at income tax slab rates. Consider Strategy B below if you can invest fresh capital!

Strategy B: Inflow Rebalancing (Zero Taxes / No Selling)

Tax Optimized

To bring your portfolio to perfect target balance without selling a single share, you need a fresh cash injection of:

₹0

Institutional Guide: Asset Allocation & Systematic Rebalancing

1. The 90% Rule of Asset Allocation

Landmark research by Brinson, Hood, and Beebower established that over 90% of a portfolio's return variability is determined by broad asset allocation (the mix between stocks, bonds, and cash)—not individual stock picking or market timing.

A properly diversified portfolio ensures you survive severe bear markets without panic-selling, while capturing the compounding power of economic growth.

2. The Institutional 5/25 Rule

Rebalancing too often increases trading costs, while rebalancing too rarely exposes you to catastrophic asset bubbles. The 5/25 Rule establishes clear thresholds:

  • Absolute 5%: Rebalance when an asset drifts by $\ge 5\%$ (e.g., Equity moves from 60% to 65.5%).
  • Relative 25%: For smaller allocations (like 10% Gold), rebalance if it moves by 25% of its weight (e.g., Gold moves above 12.5% or below 7.5%).

3. Inflow Rebalancing (Tax Optimization)

Selling overweight equities in India triggers 12.5% Long-Term Capital Gains Tax (above ₹1.25 Lakh) or 20% Short-Term Capital Gains Tax. Selling debt funds is taxed at individual slab rates.

Smart investors use Cash Inflow Rebalancing: directing ongoing monthly SIPs, dividends, or annual salary bonuses exclusively into the underweight asset class until target weights are restored.

4. Battle-Tested Allocation Models

Depending on your investment horizon and psychological risk appetite:

  • 60:30:10 Moderate: 60% Indian Equity, 30% Debt/FD/EPF, 10% Gold. Balanced wealth creation.
  • 75:15:10 Aggressive: Suitable for young investors with 10+ year time horizons.
  • 25:25:25:25 Permanent: Harry Browne's equal-weight model designed to withstand inflation, deflation, boom, and recession.

Frequently Asked Questions

What is portfolio rebalancing and why is it essential?
Portfolio rebalancing is the periodic process of realigning the weightings of your portfolio's assets back to your targeted risk allocation. Over time, higher-performing assets (such as equities during a bull market) expand in value, inadvertently elevating your overall portfolio risk beyond your comfort zone. Rebalancing locks in gains from outperforming assets and reallocates capital into undervalued asset classes.
What is the 5/25 Rebalancing Rule?
The 5/25 rule is an institutional rebalancing framework popularised by David Swensen and Larry Swedroe. You rebalance an asset class only when it deviates by an absolute 5% from its target allocation (e.g., a 60% equity target drifting above 65% or below 55%), OR by a relative 25% for smaller allocations (e.g., a 10% gold target drifting above 12.5% or below 7.5%). This avoids excessive trading costs while preventing runaway portfolio risk.
How does Inflow Rebalancing (Buy-Only) eliminate capital gains tax?
Traditional rebalancing requires selling overweight assets, triggering equity capital gains tax (12.5% LTCG / 20% STCG) or debt fund tax at slab rates. Inflow rebalancing directs new monthly SIP contributions, dividends, or bonus lumpsums exclusively to underweight asset classes. This brings your portfolio back into alignment organically with zero asset sales and zero tax liability.
How often should an Indian retail investor rebalance?
Academic research shows that rebalancing once a year (calendar-based) or whenever asset weights breach the 5/25 tolerance band (drift-based) delivers optimal risk-adjusted returns. Rebalancing too frequently (e.g., monthly) creates friction through exit loads, brokerage, and taxes without improving performance.
What asset classes should a diversified Indian portfolio hold?
A robust Indian portfolio typically spans four core asset classes: Domestic Equities (Nifty 50, Next 50, Midcap index funds), Fixed Income/Debt (EPF, PPF, Sovereign Gold Bonds, Target Maturity Debt Funds), Gold (Sovereign Gold Bonds, Gold ETFs) as an inflation hedge and currency debasement buffer, and Cash/Liquid funds for emergency reserves.
How is the minimum fresh capital required to rebalance without selling calculated?
The calculator identifies your most overweight asset class. To avoid selling any of it, that asset's existing rupee value must equal its targeted percentage of a new, larger portfolio. Total Required Portfolio = Max(Current Value_i / Target Weight_i). The minimum fresh capital required is this required total minus your current portfolio value.