Angel Investment Calculator: Return on a Startup Stake
See how an angel investment in a startup performed by setting the cash put in against what the stake returned at exit.
Adjust the inputs and select Calculate for a full breakdown.
Year-by-year value projection
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Total ROI | Annualized ROI | Net profit |
|---|---|---|---|
| $25k in · $90k out · 7yr | 260.00% | 20.08% | $65,000.00 |
| $10k in · $0 out · 5yr | -100.00% | 0.00% | -$10,000.00 |
| $50k in · $500k out · 9yr | 900.00% | 29.15% | $450,000.00 |
| $15k in · $20k out · 6yr | 33.33% | 4.91% | $5,000.00 |
How This Calculator Works
Enter the amount invested in the startup and the value the stake returned at exit — an acquisition, IPO, or secondary sale. Add the years held. The calculator reports the profit, the total return, and the annualized return.
The Formula
Return on Investment
V_start = amount invested, V_end = amount returned; annualized ROI = (V_end / V_start)^(1/n) − 1
Worked Example
A $25,000 angel stake that returns $90,000 after 7 years is a $65,000 profit — a 260% total return, or about 20.1% a year annualized. That single number, though, says nothing about the bets that returned nothing.
Key Insight
Angel investing lives or dies at the portfolio level. Most startups return little or nothing, so a few large winners must carry the whole portfolio — judge the strategy across many investments, not by one.
Angel investing fundamentals 2024
POWER-LAW RETURNS.
~50-70% of angel investments fail (total loss).
Most return < 1x.
A few return 10-100x.
Portfolio of 20-30+ needed.
Average ~2.5-3.5x over 10 yr (studies vary).
IRR ~22-27% (successful angels).
METRICS.
MOIC = exit value / invested.
IRR = annualized return.
DPI (distributions / paid-in).
DILUTION.
Each round dilutes ownership.
Pro-rata rights to maintain %.
$25K at 2% → 0.5% after rounds.
LIQUIDATION PREFERENCES.
Preferred paid before common.
1x non-participating typical.
Affects payout in modest exits.
Tax + structure + risk
QSBS §1202.
Qualified Small Business Stock.
Hold 5+ yr.
Exclude greater of $10M or 10x basis (federal).
C-corp, <$50M assets at issuance.
Substantial tax benefit for winners.
ACCREDITED INVESTOR.
$1M net worth (ex-home) or $200K income.
Reg D 506(b)/(c).
SEC requirement.
STRUCTURES.
Direct equity.
SAFE (Simple Agreement for Future Equity).
Convertible note.
Syndicate / SPV (carry + fees).
RISKS.
Total loss likely (individual deal).
Illiquidity 5-10 yr.
Dilution.
Information asymmetry.
STRATEGY.
Diversify (20-30+ deals).
Reserve for follow-on.
QSBS-eligible C-corps.
SEC + FINRA data.
U.S. angel investment benchmarks (2024)
Reference angel investing economics.
| Item | Detail |
|---|---|
| Failure rate | ~50-70% |
| Avg portfolio return | ~2.5-3.5x / 10 yr |
| Successful angel IRR | ~22-27% |
| Portfolio size needed | 20-30+ |
| MOIC | Exit / invested |
| QSBS §1202 exclusion | $10M or 10x basis |
| QSBS hold period | 5+ yr |
| Accredited net worth | $1M (ex-home) |
| Accredited income | $200K |
| Liquidation pref | 1x non-participating typical |
| Time to exit | 5-10 yr |
| Structures | Equity, SAFE, note |
Power-law returns — portfolio of 20-30+ essential (most fail, few drive returns). Dilution + liquidation preferences reduce payout. QSBS §1202 excludes $10M/10x gain (5-yr hold). Accredited-investor required. SEC + FINRA + IRS data.
Frequently Asked Questions
What is angel investing?
Angel investing is putting personal capital into early-stage startups in exchange for equity, in the hope of a large return if the company is later acquired or goes public.
What is a realistic angel return?
Most startups fail or return little. The model is portfolio-based: a small number of large winners must outweigh many losses, so individual returns vary enormously.
Does this account for dilution?
No. Later funding rounds can dilute an early stake. Enter the actual value your stake returned at exit, after any dilution, for an accurate figure.
What if the startup failed?
Enter an exit value of zero. The calculator will show a total loss — a common and expected outcome for individual angel investments.
How illiquid is an angel investment?
Very. There is usually no way to sell before an exit, which can take many years or never come. The annualized return cannot capture that lack of liquidity.
When is this calculator unreliable?
Less reliable when power-law returns (most investments fail, a few drive all returns — portfolio essential), when dilution across rounds (ownership shrinks), when liquidation preferences (preferred stock paid first), when QSBS §1202 (up to $10M/10x gain federal tax exclusion if held 5 yr), when illiquidity (5-10 yr to exit), when IRR vs MOIC distinction, when accredited-investor + Reg D requirements, or when carried-interest/SPV fees if syndicate.
References & Authoritative Sources
- U.S. Securities and Exchange Commission (SEC) — Investor Resources + Disclosures · consulted June 1, 2026 · Federal securities regulator
- Financial Industry Regulatory Authority (FINRA) — Investor Education · consulted June 1, 2026 · Self-regulatory organization
- Internal Revenue Service (IRS) — Investment Income + Capital Gains · consulted June 1, 2026 · Federal tax authority
Related Calculators
Data Sources & Benchmarks
This calculator draws on 3 independent, dated sources.
Methodology & Review
Angel investment return = (exit value − investment) / investment, or MOIC (multiple on invested capital) + IRR. U.S. 2024: angel investing power-law distributed (most fail, few 10-100x); portfolio approach; ~2.5-3.5x average over 10 yr (per studies); dilution + liquidation preferences; QSBS §1202 tax exclusion; accredited-investor requirement. RELIABILITY: Reliable for simple return math. Less reliable for (a) power-law returns (most investments fail, a few drive all returns — portfolio essential), (b) dilution across rounds (ownership shrinks), (c) liquidation preferences (preferred stock paid first), (d) QSBS §1202 (up to $10M/10x gain federal tax exclusion if held 5 yr), (e) illiquidity (5-10 yr to exit), (f) IRR vs MOIC distinction, (g) accredited-investor + Reg D requirements, (h) carried-interest/SPV fees if syndicate.
Updated