Mortgage Risks: You Cannot Neutralize Them, You Can Only Trade Them
Introduction: The myth of the safe mortgage mixture
"I'm risk-averse, I want a safe mortgage mixture" — it's one of the most common things we hear from clients. The hidden assumption is that there's a mortgage mixture that wipes out risk completely. But that's an illusion.
With a mortgage, as with investments, there's no free lunch. Every choice you make — the loan term, the monthly payment, the type of tracks — carries risk. The question isn't "how do we avoid risk" but "which risk do we prefer to take on."
Kahneman and Tversky, in their groundbreaking work on behavioral economics, showed that people suffer from loss aversion: we fear a loss more than we enjoy a gain of the same size. That fear drives us to look for "safety" in a mortgage — but that safety is often an illusion that hides other risks.
The four risks in a mortgage
1. Cash-flow risk
What is it? The worry that the monthly payment will strain your ability to stay afloat financially.
When does it happen?
- When the mortgage mixture includes volatile tracks (prime-linked, CPI-linked) and the monthly payment climbs significantly
- When you took a mortgage that's too large for your means
- When you chose a mortgage that's too short to "finish quickly," and the monthly payment is especially high
The result: daily financial stress, a drop in your standard of living, and in the worst case, a monthly deficit.
2. Equity risk
What is it? The worry that you won't have liquid money to deal with life's challenges and unexpected expenses.
When does it happen?
- When you sank the entire down payment into the property and kept no financial cushion
- When you paid down the mortgage with your investment or checking-account funds
- When you threw everything at "closing out the mortgage" instead of building a safety net
The result: a layoff, an illness, a major car or home repair — and no money to cover it. You're forced to take out expensive loans or sell assets at a loss.
3. Age risk
What is it? The worry that the mortgage will follow you into a stage of life when your earning power is significantly lower.
When does it happen?
- A 30-year mortgage taken at age 40 ends at age 70
- Retiring on a pension far lower than your salary
- A layoff at age 50+ with a hard time finding a new job
The result: the mortgage becomes a heavy burden at exactly the most vulnerable time.
An Israeli study looked at labor-market data and found that workers aged 45-59 have a harder time finding work after a layoff than younger workers. Other research shows a young worker is 40% more likely to land a job interview than an older one.
4. Macroeconomic risk
What is it? The worry that changes in the economy will move the size of the monthly payment.
When does it happen?
- A rise in the Bank of Israel interest rate affects prime-linked tracks
- High inflation pushes up the monthly payment on CPI-linked tracks
- Changes in variable interest rates
The result: the monthly payment climbs in a way you never planned for — sometimes by tens of percent.
The trade-off matrix: reducing one risk increases another
Mortgage planning isn't risk management — it's risk selection. Every decision you make shifts risk from one place to another. The question isn't "how do we avoid risk" but "which risk do we prefer to carry." That's why there's no point hunting for a "safe mortgage mixture" — there are only mixtures with different risk profiles. Our job is to figure out which risk fits your family, employment, and financial situation.
True, there are edge cases where this dilemma matters less: someone who had a multi-million-dollar exit, or someone with deep financial backing from their parents that can cover any scenario. For them, the mortgage is a technicality — they can absorb whatever happens. But the vast majority of households in Israel aren't in that boat. For the rest of us, the choice between risks is real and the stakes are high.
The table below lays out the main set of tools we use in mortgage planning. Each row shows an action meant to reduce one specific risk — alongside the price you pay as another risk grows because of that same action.
| Risk reduced | What we do | Which risk grows |
|---|---|---|
| Cash-flow (lower payment) | Extend the mortgage term | Age risk + macroeconomic risk (longer exposure) |
| Equity (keep money aside) | Take a larger mortgage | Cash-flow risk (higher monthly payment) |
| Age (shorter mortgage) | Raise the monthly payment or increase the down payment (for the same monthly payment) | Cash-flow risk + equity risk |
| Macro (fixed unlinked instead of prime) | Pay a higher interest rate | Age risk (longer mortgage) |
Risk Profile by Mortgage Mixture
Click on profiles to show / hide
The chart shows that every mortgage mixture is really a "risk profile" — and you can't zero out all the risks at once. A "safe" mortgage with a low monthly payment and stable tracks is necessarily a long mortgage, which raises age risk.
Risks can't be eliminated, but in our view there's one non-obvious move that reduces cash-flow risk, age risk, and equity risk all at once: taking a larger mortgage.
The counterintuitive truth: why a larger mortgage is actually safer
The mistaken intuition
Most people think "bigger mortgage = bigger risk." They ask: "How will I service a 1.5 million NIS mortgage if I get laid off?"
But that question misses the point. The real risk people fear isn't the "size of the mortgage." It's having no money to live on — the credit card getting declined at the supermarket, no cash to pay the bills.
Example: two families, two approaches
Take a family with a net income of 25,000 NIS and expenses (before the mortgage) of 12,000 NIS.
| Family A - small mortgage, nothing set aside | Family B - larger mortgage, financial cushion | |
|---|---|---|
| Net income | 25,000 NIS | 25,000 NIS |
| Expenses (excl. mortgage) | 12,000 NIS | 12,000 NIS |
| Mortgage amount | 1,300,000 NIS | 1,500,000 NIS |
| Monthly payment | 6,500 NIS | 7,500 NIS |
| Liquid cash set aside | 0 NIS | 200,000 NIS |
| Monthly surplus | 6,500 NIS | 5,500 NIS |
What happens if someone loses their job?
Suppose the spouse earning 13,000 NIS/month gets laid off. Household income drops, temporarily, to 12,000 NIS/month.
| Family A | Family B | |
|---|---|---|
| New income | 12,000 NIS | 12,000 NIS |
| Expenses + mortgage | 18,500 NIS | 19,500 NIS |
| Monthly deficit | 6,500 NIS | 7,500 NIS |
| Financial cushion | 0 NIS | 200,000 NIS |
| How many months can they survive? | 0 | ~27 months |
Family A, with the "small and safe" mortgage, goes into debt from day one of the layoff. Family B, with the "big and risky" mortgage, can hold out for more than two years until they find a new job.
A larger mortgage with money set aside is safer than a small one with no financial cushion.
Here's why: liquid cash is what gets you through a crisis. It's not the size of the mortgage that sets the risk — it's how much "breathing room" you have when something goes wrong.
Counterintuitive truth 2: taking a larger mortgage (and investing the capital accordingly) lets you hedge against macroeconomic instability
The problem
Some of our clients worry about local or global instability that could hit the household and/or the mortgage. The concern is understandable, and the urge to protect yourself and have a contingency plan is clear — but the solution many people reach for (taking a smaller mortgage) is, in our view, the wrong one.
The solution: hedging in foreign currency
If you're worried about economic instability in Israel — whether a war, a political crisis, or an economic slowdown — the right way to protect yourself is to hold part of your savings in foreign currency. The logic is simple: when there's a local crisis, the NIS tends to weaken against foreign currencies. Anyone holding savings in foreign currency sees their shekel value rise at exactly the moment they need that cushion — when economic conditions are tough. It's a form of insurance: in a crisis, your money is actually worth more in NIS.
📊Empirical example: the impact of the war and USD/NIS exchange rate fluctuations on your savings
Let's look at the war period that began in October 2023:
| Date | USD/NIS exchange rate | Event |
|---|---|---|
| July 2023 | 3.60 NIS | Before the war |
| 6 October 2023 | 3.86 NIS | Eve of the war |
| 26 October 2023 | 4.08 NIS | Peak - two weeks after the outbreak of the war |
| December 2025 | 3.20 NIS | Stabilization |
Anyone holding 100,000 USD (360,000 NIS in July 2023) saw the NIS value of that holding rise to 408,000 NIS at the peak of the crisis — a gain of 48,000 NIS right when they needed that cushion.
It's no coincidence. When Israel is unstable, the NIS weakens — and anyone holding foreign currency is shielded from it. Holding dollars is insurance: if all goes well, you don't earn much (and may even lose a little). But if a crisis hits, your money is actually worth more.
How to manage the various risks - wealth management and the mortgage
So what do you actually do? How do you handle the risks we've described?
The answer is that you can't look at the mortgage in isolation. The mortgage is just one part — and not necessarily the central one — of the household's financial picture. The decisions you make about the mortgage have to account for income, expenses, savings, insurance, pension, and plans for the future. Only by looking at all of these together can you make the right call on the mortgage mixture.
Below are five principles we work with in financial planning for families. One important caveat: these are guidelines, not iron rules. Every family needs to adjust them based on its employment situation, age, number of kids, future plans, and risk preferences.
Want to see how different risk scenarios affect your monthly payment? Head to the mortgage calculator and build different mortgage mixtures to plan ahead.
Good luck!