30-Day SEC Yield Calculator
If you're investing in bond mutual funds or ETFs, the 30-Day SEC Yield is one of the most important performance metrics to understand. Unlike simple yield or distribution yield, it gives a standardized way to compare income across different funds, factoring in recent payouts and price changes.
Our 30-Day SEC Yield Calculator helps you compute this yield easily and accurately based on dividends paid and Net Asset Value (NAV) over the last 30 days.
📐 Formula
The 30-Day SEC Yield is calculated using the following formula: 30-Day SEC Yield=(Net Investment Income over 30 daysAverage NAV)×(36530)×100\text{30-Day SEC Yield} = \left( \frac{\text{Net Investment Income over 30 days}}{\text{Average NAV}} \right) \times \left( \frac{365}{30} \right) \times 10030-Day SEC Yield=(Average NAVNet Investment Income over 30 days)×(30365)×100
Where:
- Net Investment Income is the actual interest/dividends earned by the fund in the last 30 days
- Average NAV = (NAV at start + NAV at end) / 2
🧰 How to Use the Calculator
- Enter Net Investment Income – Total dividends or interest income earned in the last 30 days.
- Enter NAV at Start – The Net Asset Value per share at the beginning of the 30-day period.
- Enter NAV at End – The NAV per share at the end of the 30-day period.
- Click “Calculate” – The calculator will display your fund’s 30-Day SEC Yield as a percentage.
🧪 Example
Let’s say:
- Dividends paid: $0.30
- NAV at Start: $10.00
- NAV at End: $10.20
Average NAV=10.00+10.202=10.10\text{Average NAV} = \frac{10.00 + 10.20}{2} = 10.10Average NAV=210.00+10.20=10.10 30-Day SEC Yield=(0.3010.10)×(36530)×100≈3.61%\text{30-Day SEC Yield} = \left( \frac{0.30}{10.10} \right) \times \left( \frac{365}{30} \right) \times 100 \approx 3.61\%30-Day SEC Yield=(10.100.30)×(30365)×100≈3.61%
📊 Why the SEC Yield Matters
| Reason | Explanation |
|---|---|
| Standardized | Allows fair comparisons between funds |
| Income-Only | Excludes capital gains, focusing only on income |
| Regulated | Mandated by the U.S. SEC for transparency |
| Forward-Looking | Reflects what a fund might earn over the next year if conditions stay the same |
📌 SEC Yield vs Distribution Yield
| Feature | SEC Yield | Distribution Yield |
|---|---|---|
| Focus | Income-only | Income + capital gains |
| Standardized Period | 30 days | Varies (monthly/quarterly) |
| Purpose | Comparison tool | Income expectation |
❓ FAQ – 30-Day SEC Yield
1. What is the 30-Day SEC Yield?
It’s the annualized yield based on the net investment income earned over the past 30 days, expressed as a percentage of NAV.
2. Is a higher SEC yield better?
Not always. It means more income, but you should also consider risk, fund duration, and credit quality.
3. Does SEC yield include capital gains?
No, it only includes interest and dividends.
4. Can the SEC yield change daily?
Yes, as NAV and income change, so does the yield.
5. Should I use this for stock mutual funds?
No, this yield is specifically for bond funds and income-focused ETFs.
6. What’s the difference between TTM and SEC yield?
TTM (trailing twelve-month) yield includes distributions over the past year, while SEC yield uses just the past 30 days.
7. Where can I find this info for my fund?
Check the fund’s official site or a financial data provider like Morningstar or Yahoo Finance.
✅ Conclusion
The 30-Day SEC Yield Calculator provides a clear and reliable snapshot of a bond fund's current income performance. Whether you're an income investor or comparing multiple funds, this metric is crucial for making informed decisions.