SBL Basics
How securities-backed lending actually works
Securities-backed lending (SBL) lets you borrow cash by pledging your stock as collateral. You typically receive 40–60% of the stock's value (single-stock LTV), pay interest at SOFR + 1.5–3.5% (currently 6.5–9.5%), and the loan is callable — meaning the bank can demand repayment at any time.
The appeal is simple: access cash without selling (and without triggering capital gains). But the reality is you're paying the bank to access your own wealth. And the moment your stock drops 30–40%, you face a margin call that can force liquidation at the worst possible time.
For a comprehensive overview of SBL mechanics, see our complete securities-backed lending guide and our LTV ratio analysis.
Cost Comparison
Pay 8% vs earn 10%+ — a 18% annual swing
SBL: Borrow $2M against $5M (40% LTV)
-$160,000/yr
You receive $2M in cash and pay ~8% annual interest ($160K/year). You still bear full downside risk on the stock. Margin call at 30–40% decline. No income — only cost.
Embark §721 SPV: $5M Contribution
+$500,000/yr
You generate $500K+/year in targeted income. $0 tax at contribution. No interest payments. No margin calls. You keep the stock and participate in upside.
Annual Difference: The swing is $660,000/year — from paying $160K in SBL interest to earning $500K+ in Embark income. Over 5 years, that's $3.3M in total economic difference.
| $5M Position | SBL (40% LTV, 8% rate) | Embark §721 SPV |
|---|---|---|
| Year 1 cash flow | +$2M (then -$160K interest) | +$500K income |
| Year 3 cumulative | -$480K (interest only, still owe $2M) | +$1.5M income |
| Year 5 cumulative | -$800K (interest only, still owe $2M) | +$2.5M income |
| Year 10 cumulative | -$1.6M + owe $2M principal | +$5M+ income |
| Total cost/gain over 10 years | -$3.6M (interest + principal repayment) | +$5M+ (pure income, no repayment) |
Margin Call Risk
The risk that SBL ads never mention
The single biggest risk of securities-backed lending is the margin call. When your stock drops enough, the bank demands you either deposit more collateral or repay part of the loan — immediately. If you can't, they liquidate your stock at the bottom.
| Real-World Stock Decline | Peak-to-Trough Drop | SBL Margin Call? |
|---|---|---|
| Meta (2022) | -77% | ⛔ Margin call at ~$2.5M value. Forced liquidation likely. |
| NVIDIA (2022) | -66% | ⛔ Margin call. $5M position drops to $1.7M — below loan balance. |
| Tesla (2022) | -73% | ⛔ Margin call. Position worth less than loan amount. |
| Apple (2022) | -31% | ⚠️ Near margin call threshold. Maintenance call possible. |
| Any Embark SPV | Any decline | ✓ No margin calls. Ever. The SPV structure has no callable debt. |
Margin calls create forced selling at the worst possible time.: In 2022, holders who had SBLs against Meta stock saw their $5M positions drop to $1.15M — below the loan balance. Those who were margin-called sold at the bottom and missed the 550%+ recovery.
"The cruelest irony of securities-backed lending: the margin call forces you to sell at exactly the moment you should be holding. Embark has no margin calls because there's no loan. You're generating income, not borrowing against your wealth."
The Embark Strategy
Generate Income on Your Appreciated Stock — Without a Tax Event
Engineers at Google, Meta & Apple use Embark’s IRS §721 strategy to generate 10%+ targeted income on concentrated positions — keep your stock, participate in upside, with no taxable event.
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When SBL Makes Sense
The limited scenario where borrowing is the right call
SBLs aren't always wrong — they serve a specific, narrow purpose:
You need short-term liquidity (months, not years) — like a bridge loan for real estate
You have a clear repayment plan within 6–12 months
Your LTV is conservative (under 30%) so margin call risk is minimal
You hold a diversified portfolio (not single-stock) as collateral — diversified portfolios get 65–75% LTV with much lower margin call risk
You've run the margin call math: can you survive a 40% drop without forced liquidation?
If your need is ongoing income rather than one-time liquidity, SBLs are the wrong tool entirely. You'd be paying $160K/year for the privilege of accessing $2M of your own wealth. Embark generates $500K+/year in income without any of those costs. See our SBL checklist before deciding.
Feature Comparison
SBL vs Embark — every dimension
| Dimension | Securities-Backed Lending | Embark §721 SPV |
|---|---|---|
| Cash flow direction | You PAY the bank (interest) | Embark PAYS you (income) |
| Annual cash flow ($5M position) | -$160K (8% on $2M loan) | +$500K+ (10%+ on $5M) |
| Tax trigger | None (loan) | None (§721 nonrecognition) |
| Margin call risk | Yes — 30–40% decline triggers call | None — no callable debt |
| Forced liquidation risk | Yes — bank can liquidate on margin call | None |
| Keep stock position | Yes (but pledged as collateral) | Yes (contributed to SPV) |
| Upside participation | Yes | Yes |
| Loan repayment | Full principal due eventually | No loan — nothing to repay |
| Interest rate risk | Variable rate (SOFR + spread) | Not applicable |
| Best for | Short-term, small-amount liquidity | Ongoing income generation |
FAQ
Frequently asked questions
What interest rate will I pay on an SBL?
Currently SOFR + 1.5–3.5%, which works out to approximately 6.5–9.5% annually. Rates are variable and will increase if SOFR rises. See our SBL vs margin loan vs HELOC comparison for rate breakdowns.
Can I use an SBL and Embark simultaneously?
Not on the same shares — you can't pledge stock that's contributed to an SPV, and you can't contribute pledged stock to an SPV. But if you have multiple positions, you could SBL one and contribute the other to Embark.
What happens in a margin call?
The bank gives you typically 3–5 business days to either deposit additional collateral or repay a portion of the loan. If you can't, they liquidate enough stock to restore the LTV ratio. This creates a taxable event at what is likely the worst possible price.
Is SBL interest tax-deductible?
Investment interest expense may be deductible against investment income under §163(d). But this only helps if you have sufficient investment income to offset it — and the deduction doesn't eliminate the cost, it just reduces it by your marginal tax rate.
Monetize Appreciated Stock Series
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Stop Paying. Start Earning.
Generate Income on Your Appreciated Stock — Without a Tax Event
Why pay a bank 6.5–9.5% to borrow against your stock when you could earn 10%+ annually? Embark's §721 SPV generates income on your appreciated stock — no interest payments, no margin calls, no tax event.