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Margin-Call Stress Test Calculator

See the exact portfolio decline that triggers a call on your specific collateral mix and loan size — and the real cure amount if it does, not just a rough estimate.

Quick answer: See the exact portfolio decline that triggers a call on your specific collateral mix and loan size, and the real cure amount if it does. Enter Total Portfolio Value, % in Diversified, Liquid Securities, Loan Amount Drawn, and Stress Scenario — Portfolio Decline to personalize the estimate. It returns Blended Initial Loan Value so you can compare the impact before choosing a next step. Use it to compare payment, APR, total cost, credit impact, and lender or card tradeoffs.

SWReviewed by SwitchWize Research Desk · Last reviewed September 1, 2026
Blended Initial Loan Value
$1,635,000
Blended Initial Loan Value
$1,635,000
Blended Initial Loan Value
$1,635,000
No call at this stress level
52.0% of cushion remaining
Blended Loan Values
Blended ILV (initial)
54.5%
MLV (maintenance)
69.5%
Decline That Triggers a Call52.0%
0%Your stress: 30.0%100%
Stress Scenario
Collateral value after stress$2.10M
Maintenance threshold value$1.44M

For context: since 1985, the diversified S&P 500 has fallen 20% or more roughly once every 8 years on average. A concentrated single-stock position is meaningfully more volatile than the index and can decline far more often and more severely — this reference point describes the diversified market, not your specific concentrated holdings.

A 30.0% decline does not trigger a call in this scenario. The portfolio would need to fall 52.0% before hitting the maintenance threshold.

Diagnostic

At the entered mix and loan size, the full stress-test breakdown, including the exact decline that triggers a call and the cure amount, is shown in the panel above.

Read the margin-call mechanics guide
What to do next

Read the Margin-Call Mechanics Guide

Your action plan
  1. 1

    Review the risk level and primary pressure point

    See the exact portfolio decline that triggers a call on your specific collateral mix and loan size, and the real cure amount if it does.

  2. 2

    Pressure-test one alternate scenario before deciding

    Assumptions change the answer, especially when rates, taxes, or timing matter.

  3. 3

    Use the linked guide or product page for the next step

    Turn the result into a prioritized action instead of treating it as a one-off number.

Read the Margin-Call Mechanics Guide

This is an educational estimate, not tax, legal, investment, or lending advice. Tax rules, rates, and eligibility change and depend on your full situation. Confirm with a qualified professional or the provider before acting.

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Frequently Asked Questions

Everything you need to know.

What are ILV and MLV?
Initial loan value (ILV) is the maximum a lender will advance against collateral when a loan is first drawn. Maintenance loan value (MLV) is the loan-to-collateral ratio you must stay under afterward — when the actual ratio exceeds the MLV, you get a call. This calculator derives a blended ILV from your entered collateral mix and adds an entered buffer to reach the MLV.
Why is the cure amount larger than the percentage gap between my stressed LTV and the target?
Because selling collateral to pay down the loan reduces both the loan balance and the remaining collateral value at the same time, so the ratio moves less per dollar sold than a naive read of the percentage gap suggests. The calculator runs the real algebra, not the shortcut.
Does a concentrated stock position change the math?
Yes, substantially. A concentrated position typically supports a much lower advance rate than diversified holdings, and this calculator lets you set that portion's advance rate separately. It does not, however, model the concentrated position declining by a different amount than the diversified portion during a stress event — both are stressed uniformly here, a simplification stated in the disclaimer.
How often does a decline large enough to trigger a call actually happen?
For context, the diversified S&P 500 has fallen 20% or more roughly once every 8 years on average since 1985. A concentrated single-stock position is meaningfully more volatile than the index and can decline far more often — this reference point describes the market, not a specific concentrated holding.
Is the Margin-Call Stress Test Calculator free to use?
Yes. SwitchWize calculators are free, and you do not need an account to run scenarios or view the result.
Does using the Margin-Call Stress Test Calculator affect my credit score?
No. Using a calculator does not trigger a credit check. A credit impact can occur only if you apply directly with a lender, card issuer, or provider.
Are the results personalized financial advice?
No. Calculator outputs are educational estimates based on the inputs you enter. Review assumptions and confirm terms directly with providers before making a financial decision.
What should I do after seeing the result?
Use the recommendation module on this page to read the margin-call mechanics guide, or run Money Map to compare this loans & credit decision with your other opportunities.
How does SwitchWize choose related offers?
Related offers are matched by the calculator surface (loans) and ranked using SwitchWize data such as rate, fees, trust signals, product fit, and switching friction. Paid relationships do not change organic ranking order.
How fresh are the rates and offers shown?
Rate and offer data is reviewed on a recurring cadence and every offer module shows review context or links to the methodology and disclosure pages.
Where can I see the ranking methodology?
The SwitchWize methodology page explains how rate freshness, editorial review, affiliate disclosure, and category ranking factors work.
Can Money Map use this result?
Yes. Money Map is the broader diagnostic path: it compares savings, mortgage, cards, and debt so you can see whether this calculator result is your highest-impact next move.

Why This Matters

The price drop required to trigger a margin call is usually smaller than the initial advance rate makes it feel like it should be, because the loan-to-value ratio rises faster than the raw dollar decline as collateral value shrinks. And curing a triggered call almost always requires selling more than the raw percentage gap suggests, since selling collateral shrinks both sides of the ratio at once. This calculator runs the actual arithmetic on your specific mix.

How to Use It

  1. 1Enter your total portfolio value and the % held in diversified vs. concentrated positions
  2. 2Enter the loan amount actually drawn
  3. 3Set a stress-test decline percentage to see if it triggers a call
  4. 4Check the cure amount if a call is triggered — it will be larger than the raw percentage gap alone suggests
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Read the Margin-Call Mechanics Guide