SPYI vs Borrowing at 6% — Revenue, Cost, and Profit Examples
What happens if you buy a high-yield covered-call ETF like SPYI (we'll use a 12.5% annual yield for this example) and fund part of it by borrowing money at 6% (margin, Credit Card 0% offers or personal loan). This post walks through the math in plain English and shows where profit and return come from, and outlines the risks.
Assumptions (what I used for the math)
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SPYI (example) yield: 12.5% annual (income distributions).
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Borrowing (margin) rate: 6% annual.
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Starting own capital: $10,000.
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Borrowed amount varies from $0 → $30,000.
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No account or trading fees were modeled. Taxes are not included.
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Yield is assumed to remain constant for the period analyzed (real-world yields vary, this is about the average).
The formulas
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Total invested = own capital + borrowed amount
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Income (annual) = total invested × yield (12.5%)
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Borrowing cost (annual) = borrowed amount × borrow rate (6%)
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Net annual profit = income − borrowing cost
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ROI on own capital (%) = net annual profit ÷ own capital × 100
Quick numeric examples
| Borrowed ($) | Total Invested ($) | Income ($/yr) | Borrow Cost ($/yr) | Net Profit ($/yr) | ROI on Own Capital (%) |
|---|---|---|---|---|---|
| 0 | 10,000 | 1,250 | 0 | 1,250 | 12.5% |
| 10,000 | 20,000 | 2,500 | 600 | 1,900 | 19.0% |
| 20,000 | 30,000 | 3,750 | 1,200 | 2,550 | 25.5% |
| 30,000 | 40,000 | 5,000 | 1,800 | 3,200 | 32.0% |
Key takeaways
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Because 12.5% (income) > 6% (borrow cost), borrowing to buy SPYI in this model increases your net annual profit and ROI on your original capital.
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With $10k of your own capital and borrowing $20k, your net income goes from $1,250/yr to $2,550/yr — and your ROI on the $10k rises from 12.5% → 25.5%.
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In dollars: borrowing $20k raised your net profit by $1,300/year in this example.
Why this looks so attractive (the mechanics)
You are effectively leveraging the spread between what SPYI pays and what you pay in interest, this is how a business works:
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Net extra profit from each borrowed dollar = borrowed_amount × (yield − borrow_rate)
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With yield 12.5% and borrow rate 6% → spread = 6.5% per borrowed dollar
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So each $10,000 borrowed adds roughly $650/year of net profit before taxes and fees.
Important risks & real-world considerations (don’t skip these)
This simple model highlights upside, but it omits several real-world dangers you must consider:
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Price risk / volatility — SPYI’s distributions can be high while the ETF’s share price falls. That can wipe out income gains if the market drops.
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Margin calls / forced deleveraging — If you use margin and the value of your holdings falls, your broker may require extra cash or force sales at the worst time. Borrowing from other sources, reduces this risk and provides time for the market to recover.
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Yield variability — Distributions change. Yields that look great today can shrink if volatility or fund policy changes.
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Tax treatment — ETF distributions may be taxed as ordinary income. Interest on margin may be deductible in limited circumstances; tax effects impact net profit. Just like a job, you will owe taxes on your cash gains
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Counterparty / structural risk — SPYI is designed to product your share value, not all Covered Call ETFs do this. Do your own research.
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Interest-rate risk — If your borrowing rate rises (if it's variable), the spread can compress or flip negative.
Rule of thumb: if your borrowing rate approaches or exceeds the yield you rely on, the leveraged approach quickly becomes unprofitable. The spread (yield − borrow_rate) is the critical number.
Simple breakeven check
Net annual profit increases while yield > borrow rate. If borrow rate rises above yield (or yield falls), leverage becomes harmful. Always check the spread:
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Example: yield 12.5% − borrow 6% = 6.5% spread → favorable
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If borrow becomes 13% or yield drops to 5% → negative spread → not favorable
Practical guidance / checklist before you consider this
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Confirm the real Yield (ex. use the fund’s SEC yield or recent trailing distributions).
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Know your true borrowing rate (margin or loan APR, not advertised promotional rates).
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Test the scenario with stress cases: 20% market drop; yield cut in half; borrow rate up 2 points.
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Keep margin usage conservative
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Understand tax consequences — consult a tax professional.
Bottom line
Mathematically, if you can consistently get 12.5% income from an ETF and borrow at 6%, leverage increases both net income and ROI on your original capital. The simple examples show meaningful dollar and percentage gains. Do your own research, and while the market is always gone up and to the right over history, every year and even long stretches of years can see declines in price.
Price increases and declines are less important with this strategy, as long as you are not FORCED TO SELL at a loss, and you can continue to cover your costs of borrowing. Time works for you, and with time, the market as historically going up and to the right.
Disclaimer
The information provided here is for educational and entertainment purposes only and should not be considered financial, investment, or trading advice. I am not a licensed financial advisor. All investing involves risk, may include but not limited to loss of principal. Always do your own research or consult with a qualified financial professional before making any financial decisions.
