Credit & Creditworthiness
Learn how credit scores and creditworthiness work across different countries, and how to rebuild from zero when you move abroad.
What Is a Credit Score, Really?
A number that follows you everywhere (within one country)
A credit score is a numerical summary of how reliably you have borrowed and repaid money. That is it. It is not a measure of your wealth, your intelligence, or your value as a human being. A millionaire who pays cash for everything might have no credit score at all. A recent graduate with a credit card they have used responsibly for two years might have an excellent one. The score exists to answer one question for lenders: "If I lend this person money, how likely am I to get it back?"
What goes into the number
While the exact formula varies by country and scoring model, the factors are remarkably consistent worldwide. Payment history is the single biggest factor: do you pay your bills on time? Even one missed payment can cause significant damage. Credit utilisation is next: how much of your available credit are you using? Using $9,000 of a $10,000 credit limit looks risky to lenders, even if you plan to pay it off. Length of credit history matters because lenders want to see a long track record of reliability. Types of credit (a mix of credit cards, loans, and mortgages shows you can handle different kinds of debt) and recent inquiries (applying for many credit products in a short time looks desperate) round out the picture.
The five factors of creditworthiness
- 1
Payment history (~35% of US FICO score)
Do you pay on time, every time? This is the single most important factor. In the US, a single 30-day late payment can drop your score by 50-100 points and stays on your report for 7 years.
- 2
Credit utilization (~30%)
How much of your available credit are you using? Keeping utilization below 30% is generally recommended; below 10% is ideal. If you have a $10,000 limit, try to carry less than $1,000 at any billing statement.
- 3
Length of credit history (~15%)
How long have your accounts been open? Older accounts demonstrate a longer track record of responsibility. This is why closing your oldest credit card can actually hurt your score.
- 4
Credit mix (~10%)
Having different types of credit (credit card, car loan, mortgage) shows lenders you can manage various forms of debt responsibly. Don't take on debt just for the mix, but if you already have it, it helps.
- 5
Recent inquiries (~10%)
Each time you apply for credit, a "hard inquiry" appears on your report. Multiple inquiries in a short period suggest financial stress. Rate-shopping for mortgages or auto loans within a 14-45 day window typically counts as a single inquiry.
Credit systems around the world
The concept of a numerical credit score varies wildly across countries. In the US, FICO and VantageScore dominate, with scores ranging from 300 to 850. It is an intensely score-driven culture: your score affects mortgage rates, apartment applications, insurance premiums, and even some job applications. The UK uses three major bureaus (Experian, Equifax, TransUnion), each with its own scoring system. Germany has SCHUFA. The Nordic countries have credit bureaus too, and lenders there lean heavily on public tax and income data. Some countries, like much of Southeast Asia and parts of Latin America, have no widespread consumer credit scoring at all: lending decisions are made based on income verification and personal relationships with banks.
Why credit scores matter beyond borrowing
Your credit score increasingly affects things beyond loans. In the US, landlords check credit for rental applications. Some employers review credit reports for hiring decisions. Insurance companies use credit-based scores to set premiums. Even utility companies may require a deposit if your credit is poor. The score has become a general "trustworthiness" metric, for better or worse.
Key takeaways
- A credit score measures borrowing reliability, not wealth or financial success.
- Payment history and credit utilization are the two most important factors.
- Credit scoring systems vary a lot across countries. The US is unusually score-driven.
- Your score affects more than just loans: rentals, insurance, employment, and utility deposits.
Test yourselfWhich factor has the BIGGEST impact on your credit score in most scoring models?
Answer: Your payment history: whether you pay on time
Payment history is consistently the most heavily weighted factor across scoring models (about 35% of a US FICO score). Lenders care most about whether you reliably pay your obligations. Notably, income is NOT a direct factor in credit scores: a high earner who misses payments will have a worse score than a modest earner who always pays on time.
The Expat Credit Problem
You move countries and become a credit ghost
You had an 800 FICO score in the US, or an "Excellent" rating in the UK. You haven't missed a payment in your life. Then you move to a new country, walk into a bank, and they look at you like you haven't handled money before. Because in their system, you haven't. Credit histories usually don't cross borders. Each country's credit bureaus work independently, and only a few services let you carry a report from one country to another. Your decades of responsible credit use? Invisible.
This is one of the most frustrating practical challenges of expat life. You might not be able to get a mortgage, a car loan, a post-paid phone contract, or even a basic credit card. Some landlords will reject your rental application. You are treated identically to an 18-year-old who has had no financial products, except you are a 35-year-old professional with $200,000 in savings and a spotless record in another country. The system simply cannot see it.
Real consequences of being a credit ghost
A well-paid newcomer to the UK can be refused a basic credit card and end up on a prepaid phone for months, because a phone contract needs a credit check they cannot yet pass. A newcomer to Australia with a healthy balance in a local bank account can still be turned down for a car loan, because the lender wants a year of local credit history. Neither is unusual.
Strategies for building credit in a new country
A note before the playbook: these tactics are built for countries where a credit score rules, such as the US, UK, and Canada. In the Nordics, Germany, and other systems built more on bank relationships and credit bureaus like Germany's SCHUFA, dedicated secured cards and credit-builder products are far less common and less central. There, what matters is a local bank relationship, a registered address, and a clean payment record. Treat the steps below as the score-based playbook, and focus on those three things everywhere else.
The credit-building playbook (score-based countries)
- 1
Start with a secured credit card
A secured card requires a cash deposit (typically $300-$1,000) that serves as your credit limit. Since the bank has zero risk, they will approve almost anyone. Use it for small purchases, pay it off in full each month, and you will start building local credit history.
- 2
Use credit builder accounts
Some banks and fintech companies offer "credit builder" products where you make regular payments into a locked savings account, and those payments are reported to credit bureaus. After 6-12 months, you have both savings and a credit history.
- 3
Try the Amex Global Transfer
If you have an American Express card in your home country, Amex offers a "Global Card Transfer" program that lets you open a new Amex in your destination country based on your existing relationship. Your home country history does not transfer, but Amex is more willing to approve you. This is one of the few genuine shortcuts available.
- 4
Use international banks with multi-country presence
Banks like HSBC have international programs that can smooth the transition. If you are an HSBC customer in one country, they may offer products in another country based on your existing relationship. Citibank and other global banks sometimes offer similar programs.
- 5
Get on the electoral register (UK-specific)
In the UK, being on the electoral register significantly boosts your credit score. It is a quick, easy step that many expats overlook. If you are eligible to vote (Commonwealth citizens can in UK elections), register as soon as possible.
- 6
Ask your employer for a reference
Some lenders will consider an employer reference letter confirming your salary and contract stability, especially for mortgages. This is more common in countries where credit scoring is less dominant.
Maintaining credit in your home country
Do not abandon your home country credit while building new credit abroad. You may return someday, or you may need home-country credit for specific purposes. Keep one or two credit cards active with small recurring charges (a streaming subscription works perfectly). Set up automatic payments so nothing falls through the cracks while your attention is elsewhere. If you close all your home country accounts, that hard-earned credit history will eventually become stale or disappear.
The expat credit timeline
Expect the process to take 6-18 months before you have meaningful credit in a new country. Within 3-6 months of using a secured card responsibly, you can often graduate to an unsecured card. After 12-18 months, you may qualify for better products with rewards. Many mortgage lenders want a year or two of local history, though it varies by country and lender. Patience is the strategy.
Key takeaways
- Credit histories usually don't cross borders: moving countries often means starting again.
- Secured credit cards and credit builder accounts are the most reliable starting points.
- The Amex Global Transfer program is one of the few genuine shortcuts for transferring a banking relationship.
- Maintain your home country credit with at least one active card and automatic payments.
- Budget 6-18 months to build usable credit in a new country.
Test yourselfYou are moving from Canada to Germany. What happens to your Canadian credit score?
Answer: It remains in Canada, invisible to German lenders: you start with no credit history in Germany
Credit histories generally do not cross borders. Your Canadian credit score stays in Canada, maintained by Canadian bureaus. German lenders use SCHUFA, a completely separate system that has no connection to Canadian data. You will need to build German credit from scratch, though your Canadian credit will remain intact for if and when you return or need it.
Using Credit Wisely
Credit is a tool, not a trap
There is an important distinction that gets lost in personal finance discussions: using credit and being in debt are not the same thing. Using credit means borrowing money and repaying it strategically, often within the same billing cycle, paying zero interest. Being in debt means carrying balances that accrue interest and cost you money. A credit card paid in full every month costs you nothing and builds your credit history. That same card with a carried balance at 20% APR is an expensive trap. The tool is the same. The difference is how you use it.
Using credit (the tool)
- Pay full balance every statement period
- Pay zero interest
- Build credit history and score
- Earn rewards on spending you would do anyway
- Gain purchase protections (chargebacks, extended warranties)
- Maintain a low utilization ratio
Being in debt (the trap)
- Carry balances month to month
- Pay 15-25% APR interest
- Rewards are dwarfed by interest charges
- Minimum payments barely cover interest
- High utilization damages your credit score
- Creates a cycle that is hard to escape
Credit utilization: the 30% and 10% rules
Credit utilisation, the share of your available credit you are using, is the second most important factor in most credit scoring models. The general guideline is to keep utilization below 30%, but for the best scores, below 10% is ideal. If you have a $10,000 credit limit, keeping your balance below $1,000 at statement time signals to lenders that you are not dependent on credit. A common trick: if you have a large purchase that pushes your utilization high, pay it off before the statement closing date so the reported balance stays low.
Rewards without the trap
Say you spend $3,000 per month on groceries, utilities, fuel, and subscriptions: things you would buy regardless. A 2% cash-back credit card earns you $720 per year on spending you were going to do anyway. That is free money, but only if you pay the balance in full every month. Carry a $3,000 balance at 20% APR and you pay about $50 in interest a month, $600 a year, which cancels out most of the rewards. The rewards only work if you don't pay interest.
When to use credit vs debit
Credit cards offer significant advantages over debit cards for everyday purchases, if you can trust yourself to pay in full. Credit cards provide fraud protection (your own money isn't directly at risk), purchase disputes are easier to resolve, many offer extended warranties and travel insurance, and you earn rewards. Debit cards pull directly from your bank account, giving you less recourse if something goes wrong. However, if you struggle with overspending, a debit card creates a natural hard limit: you cannot spend what you do not have. Use whichever tool matches your discipline level honestly.
When to close accounts (and when not to)
Closing a credit card can hurt your score in two ways: it reduces your total available credit (raising your utilization ratio) and eventually removes a line of credit history. So when does closing make sense? If a card has an annual fee and you are not using the benefits enough to justify it. If having the card tempts you into spending you cannot afford. If you are simplifying finances and the card serves no purpose. When should you keep it? If it is your oldest card (it anchors your credit history length). If closing it would significantly raise your utilization ratio. If it has no annual fee, there is no cost to keeping it open with a small recurring charge.
Building credit intentionally
If you are early in your credit journey (especially as an expat building fresh), think of credit building as a deliberate project, not a side effect. Use one or two cards for regular purchases. Pay them in full, every time, on automatic payment. Request credit limit increases every 6-12 months (this lowers your utilization ratio without changing your spending). After 12-24 months of this, your score will improve dramatically.
Key takeaways
- Using credit (paying in full monthly) and being in debt (carrying balances) are fundamentally different.
- Keep credit utilisation below 30%, ideally below 10%, for the best scores.
- Credit cards offer superior fraud protection and rewards compared to debit, but only if you pay in full.
- Only close credit cards if the annual fee is not justified or the card tempts you to overspend.
- Build credit intentionally: use cards, pay in full, and request limit increases regularly.
Test yourselfYou have a credit card with a $5,000 limit and a 2% cash-back reward. You spend $4,500 this month and plan to pay it off in full. What should you be aware of?
Answer: Your credit utilization is 90%, which could negatively impact your score even if you pay in full. Consider paying before the statement date
Even if you pay in full, your utilization ratio is based on the balance reported on your statement date, which is typically the closing date of your billing cycle. A 90% utilization ($4,500 of $5,000) will temporarily lower your score. To avoid this, pay off some of the balance before the statement closes so the reported balance is lower. Alternatively, request a credit limit increase to naturally lower the ratio.