Dollar-Weighted Return Calculator
Dollar-Weighted Return (also known as Money-Weighted Return or Internal Rate of Return) measures your true personal investment performance by giving more mathematical weight to returns earned when your portfolio balance was largest.
Enter Parameters
Adjust inputs to calculate real-time estimates
Showing an initial illustrative scenario using standard parameters. Adjust the input fields on the left and click Calculate now to evaluate your specific numbers.
Calculation Summary
Your Dollar-Weighted Return (Internal Rate of Return) is 8.60% annualized.
Money-weighted return (IRR)
8.60%
Net investor profit
$30,000.00
Total capital contributed
$135,000.00
Ending portfolio value
$165,000.00
Dollar-Weighted Return (Money-Weighted Return / IRR) measures your personal investment performance by factoring in the timing and magnitude of your deposits and withdrawals.
Visual Analytics & Breakdown
Financial Distribution Diagram
Interactive circular proportion of financial allocation
What this dollar-weighted return calculator is showing you
Dollar-Weighted Return (also known as Money-Weighted Return or Internal Rate of Return) measures your true personal investment performance by giving more mathematical weight to returns earned when your portfolio balance was largest. Purpose-built for practical decision-making, the Dollar-Weighted Return Calculator provides quantitative clarity on this financial problem by transforming raw input assumptions into structured, actionable projections. Calculations reflect Australian Taxation Office (ATO) Stage 3 personal tax brackets, the 2.0% Medicare Levy, and statutory Superannuation Guarantee rates.
Calculations are performed using the mathematical model Solves for periodic IRR r where Starting Value + Sum[ CashFlow_t / (1 + r)^t ] = Ending Value / (1 + r)^n.. In this computation, Starting portfolio value ($) establishes the baseline scale, while parameters such as Ending portfolio value ($) determine the progression over time. Adjusting these values allows you to observe how incremental changes directly influence your final outcome.
Mathematical Model
Solves for periodic IRR r where Starting Value + Sum[ CashFlow_t / (1 + r)^t ] = Ending Value / (1 + r)^n.
Inputs that matter most
Understanding how each variable impacts the final calculation
Starting portfolio value ($)
Portfolio value at beginning of evaluation period.
Ending portfolio value ($)
Final portfolio balance at the end of the period.
Net deposit / withdrawal in Year 1 ($)
Net cash added (positive) or withdrawn (negative) during Year 1.
Net deposit / withdrawal in Year 2 ($)
Net cash added (positive) or withdrawn (negative) during Year 2.
Total evaluation duration (years)
Number of annual periods evaluated.
How to interpret your results
Distinguish between your marginal tax bracket and your effective overall tax rate. The effective rate represents the actual percentage of gross income owed in taxes.
Identify pre-tax deductions, allowable retirement contributions, and eligible tax credits that can legally reduce taxable base income before formal filing.
- ✓ Review standard deduction versus itemized deduction thresholds to ensure you claim the optimal filing status.
- ✓ Utilize tax-advantaged accounts (such as 401(k), IRA, or HSA) to legally reduce taxable gross income where eligible.
- ✓ Consult official tax authority documentation or a qualified CPA for complex multi-jurisdiction or business tax scenarios.
Worked Example Scenario
The snapshot below illustrates a representative calculation using the standard initial parameters:
Money-weighted return (IRR)
8.60%
Net investor profit
$30,000.00
Total capital contributed
$135,000.00
Ending portfolio value
$165,000.00
Dollar-Weighted Return (Money-Weighted Return / IRR) measures your personal investment performance by factoring in the timing and magnitude of your deposits and withdrawals.
Dollar-Weighted Return Calculator Assumptions & Planning Boundaries
This calculator executes deterministic mathematical models based on Solves for periodic IRR r where Starting Value + Sum[ CashFlow_t / (1 + r)^t ] = Ending Value / (1 + r)^n.. It assumes that entered parameters—such as Starting portfolio value ($) and associated rates—remain constant throughout the evaluated period without unmodeled mid-cycle adjustments.
In real-world financial environments, factors including macroeconomic interest rate shifts, localized tax regulations, loan origination fees, closing costs, and inflation variability may cause actual outcomes to differ from theoretical calculations. These figures should be utilized as an analytical planning baseline rather than a legally binding quotation.
Key Factors to Review:
- • Statutory bracket baseline: Estimates use current statutory brackets and standard deductions without personalized tax adjustments.
- • Jurisdictional variance: State, provincial, local, or municipal taxes may alter total tax liability compared to federal baselines.
- • Deduction eligibility: Individual tax positions depend on verified receipts, exemptions, and formal tax authority guidelines.
Frequently Asked Questions
How does Dollar-Weighted Return differ from Time-Weighted Return (TWR)? ▼
Time-Weighted Return measures pure fund manager skill by stripping out the timing of cash inflows and outflows. Dollar-Weighted Return measures the actual financial experience of the specific investor, heavily penalizing you if you poured money into the market right at a peak.
Why is Money-Weighted Return often lower than reported fund returns? ▼
Behavioral research (e.g. Morningstar "Mind the Gap" study) shows individual investors tend to chase hot performance, adding capital after rallies and pulling money out after corrections, causing personal dollar-weighted returns to lag published index returns.