How to stress-test your first-year plan

Key rules

• Liquid cash only: Count only money you can reach within days without a meaningful loss, and leave out the fianza and other locked funds.
• Base runway: Divide your liquid cash by your net monthly burn, which is essentials minus net income.
• One at a time, then together: Run each shock alone first, then in pairs, then as one severe combined case.
• Read months lost: Judge each shock by the months of runway it removes, not just its cost in euros.
• Target: A common aim for newcomers is 6 to 12 months of essentials.

The short version

Your plan is only as strong as the month it goes wrong. To test it, work out how many months your cash lasts today. Then apply each shock and see how many months it takes away. Count only liquid cash throughout.

Step 1: Count only liquid cash

Liquid cash is money you can reach within days without a meaningful loss. That means:

• current and savings accounts
• deposits or money-market funds with instant or short-notice access
• fixed-term deposits, only if you can withdraw without a large penalty, and then only the net amount

Leave out the fianza, because you only get it back at the end of the lease. Also leave out utility deposits, money held as a visa or bank guarantee, pension plans, property, business stakes, and investments that could sell at a loss.

Cash in another currency counts at a discounted exchange rate. A transfer also takes some days.

Step 2: Find your base runway

1. Add up your monthly essentials: rent, utilities, food, insurance, taxes and debt payments.
2. Subtract your monthly net income. The result is your net monthly burn.
3. Divide your liquid cash by that burn.

Example: €12,000 of liquid cash and a burn of €1,500 a month gives a base runway of 8 months.

Step 3: List and size your shocks

Write each shock as a cost in euros and a time in months:

• Job or income loss. Include any benefit you would get and how long it would take to arrive.
• Permit or work-authorisation delay. This means months with no income.
• Rent rise or moving costs. Include a new deposit and the move itself.
• Urgent travel or repatriation. Family emergencies and paperwork trips are typical.
• Currency moves. These matter if your income or savings are in another currency and your costs are in euros.

Step 4: Run each shock alone

Apply one shock at a time to your liquid cash. Then read the result in months lost: base runway minus the new runway.

Example: a €3,000 moving cost on the case above leaves €9,000. That is 6 months, so the shock costs you 2 months.

For an income loss, raise your monthly burn by the income you lose. Do not just subtract a one-off amount.

Step 5: Combine shocks

Real problems often arrive together, so run pairs. Start with these:

• Permit delay and no income. Some employer starts depend on the permit.
• Job loss and a rent rise or forced move. Tight rental markets leave little room to downsize.
• Job loss and a permit problem. Renewals often depend on keeping your job or income.
• Urgent travel and an income gap. These often coincide.
• A currency swing with foreign-currency income. It hurts most when your costs are in euros.

Add up the months lost for each pair. Then run one severe case that combines your worst shocks.

Step 6: Compare with a target and decide

A common target for newcomers is 6 to 12 months of essentials. This is a planning habit, not an official standard, and advisers differ on the number.

If a result falls below your target, pick a fix:

• build more cash
• cut your monthly costs
• delay the move

Decide in advance what level of runway makes you act, so you are not deciding under pressure.

Use the tools below

The calculator below does the sums for you. The comparison shows which shocks tend to hurt most and how long recovery takes. The checklist repeats the steps in order, and the FAQ covers deposits and foreign-currency savings.

Which first-year shocks hurt most and how long recovery takes

The worst first-year shocks come in pairs

A single shock is rarely what breaks a first-year budget. The damage comes when one problem triggers another. Plan for these pairs, starting with the hardest to recover from.

How to use this ranking

Start your stress test with the pairs at the top, not the single shocks at the bottom. Rank 1 and 2 are the ones where a cash buffer alone may not be enough, because the cause is your permit, not just your money. Rank 3 to 5 are mostly money problems that a buffer can absorb.

This page does not set typical euro costs or recovery times, because they depend on your rent, savings and permit type. Work out your own figures with the stress test steps, and ask your town hall or a gestor how long permit delays and renewals take in your area.

Treat this ranking as a rough guide from newcomer reports, not measured data, and check each shock against your own situation.

Checklist

• Work out your base runway by dividing your liquid cash by your net monthly burn (essentials minus net income).

• List your shocks and size each one in euros and months: job loss, permit delay, rent rise or moving costs, urgent travel, and currency moves.

• Run each shock on its own, using only liquid cash, and note the months of runway it takes off your base runway.

• Combine the pairs that tend to happen together, such as job loss with a rent rise or a permit delay with no income, and add up the months lost.

• Run one severe case that combines your worst shocks and read the result in months lost.

• Compare each result with a target of 6 to 12 months of essentials.

• Decide your fixes for any result below target: build more cash, cut costs or delay the move.

See how long your cash lasts under each shock

Work it out

What you enter

• Your cash today, not counting your deposit (EUR): Add up your bank balances in your banking app.
• Your total monthly costs, rent included (EUR): Average your last three months of card and bank statements.
• Your monthly take-home income (EUR): Your payslips or the transfers into your bank account.
• Your monthly rent (EUR): Your lease contract.
• Your deposit (fianza) held by the landlord (EUR): Your lease contract or the transfer you made when you signed.
• Days you have paid Spanish social security in the last 6 years (days): Your work-life report (informe de vida laboral) from the Seguridad Social site.
• Monthly unemployment benefit you expect (EUR): The estimate from the unemployment office (SEPE), or 70% of your recent pay for the first 180 days.
• Months you wait for a permit with no work income (months): The decision time for your permit type from your local immigration office (Extranjería).
• Rent rise you want to test (%): Your contract's update clause, or the rise your landlord proposes.
• Share of your income paid in a foreign currency (%): Your contract or payslips: the part not paid in euros.
• Fall of that currency against the euro (%): Pick a test size such as 10, or compare last year's rates on your bank's exchange page.

Figures used

• Months before the first benefit payment arrives: 1 months (as of 2026)
• Days in a month for benefit duration: 30 days (as of 2026)

Worked example (with Your cash today, not counting your deposit 9,000 EUR, Your total monthly costs, rent included 1,800 EUR, Your monthly take-home income 2,000 EUR, Your monthly rent 900 EUR, Your deposit (fianza) held by the landlord 900 EUR, Days you have paid Spanish social security in the last 6 years 360 days, Monthly unemployment benefit you expect 1,000 EUR, Months you wait for a permit with no work income 3 months, Rent rise you want to test 3 %, Share of your income paid in a foreign currency 100 %, Fall of that currency against the euro 10 %)

When the sum misleads

• If your income is higher than your costs, today's runway uses a 1 euro monthly loss, so treat that figure as very long rather than exact.
• Count your deposit only after the landlord returns it: the landlord has 30 days from the day you hand back the keys, but returns often take 1 to 3 months.
• Apply for unemployment benefit within 15 working days of the day after your job ends. Later filing shortens the benefit by the days of delay.
• With under 360 days of contributions the benefit result is 0 days, so use the no-benefit figure for job loss.
• Permit decisions often take 1 to 3 months and can run to 3 to 6 months in busy provinces, so test both ends.

Frequently asked questions

Does a rental deposit count as liquid cash in my stress test?

No, your rental deposit (the fianza) does not count as liquid cash in a stress test. It is held by the regional body and only comes back at the end of the lease. Pension plans, property, business stakes and visa or bank guarantee funds are left out for the same reason.

How do I count savings held in another currency?

Count savings held in another currency at a discounted exchange rate, not today's rate. A transfer also takes some days, so only count the money you could actually have in a euro account quickly.

Which shocks should I combine first when testing my plan?

Start by combining job loss with a rent rise or forced move, and a permit delay with no income. Job loss with a permit problem is also common, because renewals often depend on keeping your job or income. If your income is in a foreign currency, add a currency swing to your severe case.