Short answer: a US credit file is national, it does not import from your home country, and it starts at nothing rather than at bad. With an LLC, an EIN and either an ITIN or an SSN, a non-resident can build one, slowly, through secured products first, with the score arriving after about six months of reported activity and becoming genuinely useful somewhere past a year. There is no shortcut, and the products that promise one are usually selling a fee.
Nothing is not the same as bad
The first thing to understand is that you are not starting from a poor score. You are starting from no file, which the industry calls being credit invisible or having a thin file, and it behaves differently.
A bad score is a lender saying no because of what you did. No file is a lender saying no because there is nothing to assess. The second is easier to fix, and it needs a different approach: your goal in the first year is not a good score, it is any history at all.
This is also why your record at home does not help. Credit reporting is national infrastructure. A perfect twenty-year history with a Spanish or Mexican bank exists in a system US bureaus do not read, and there is no mechanism to transfer it.
The identifiers, and what each one unlocks
EIN. The company’s federal tax number. Obtainable without an SSN by filing directly with the IRS, and required for the bank account anyway. It is the identifier for business credit products, and it is the one you will have first. Getting one without an SSN covers the process and the delays.
ITIN. A personal taxpayer number for people who are not eligible for an SSN. This is the one that opens most consumer credit products to a non-resident, and it is worth understanding that obtaining it has its own requirements and its own timeline.
SSN. Only if you are eligible through work authorisation. Most non-resident owners will never have one, and building without it is a normal, well-trodden path rather than an obstacle.
The practical sequence for most people is EIN first because it comes with the company, then ITIN if consumer products are part of the plan.
What actually approves a thin file
In rough order of how likely they are to say yes.
A secured card. You deposit an amount and receive a card with that limit. The lender has no risk, which is why it approves, and the activity reports to the bureaus like any other card. This is the standard entry point and there is no shame in it: it is what the product is for.
A bank-relationship product. An account you already hold, with the same institution, where the existing deposit relationship substitutes for history. This is one of the underrated reasons to get the business banking right early.
A store or fuel card. Narrow use, low limits, easier underwriting. Less useful than a general card but it reports.
A business card underwritten on the owner. Most business cards for a young company will consider you personally, which for a thin file means a personal guarantee. Read what you are signing: the point of the LLC was a liability line, and a personal guarantee crosses it deliberately.
Reporting services for existing payments. Some services report rent or utility payments into your file. Useful at the margin, not a substitute for a credit account.
What does not work: applying to the best cards on the assumption that your income justifies them. Each application leaves a mark, several in a short window read as distress, and a run of declines is a worse position than not having applied.
The five factors, and which ones you can move
Scoring models differ in detail and agree on the shape.
Payment history is the largest factor, and it is entirely within your control. One missed payment on a thin file does disproportionate damage because there is nothing else in the file to dilute it. Automate the minimum payment on day one and never rely on remembering.
Utilisation (how much of your limit you use) is the second largest, and it is the one people get wrong. Carrying a balance does not help your score; using a small fraction of your available limit does. Well under a third is the usual guidance, and lower is better. Running a card to its limit each month and paying it off in full can still report high utilisation depending on when the statement cuts.
Age of accounts is scored and cannot be accelerated. This is why the timeline is what it is, and why closing your first card once you have better ones is usually a mistake. It shortens your average history for no benefit.
Credit mix matters modestly and is not worth engineering early.
New applications count against you briefly. Space them out. Applying to five things in a week to see what sticks is the single most common self-inflicted wound.
A realistic timeline
Months 0 to 2. Entity, EIN, bank account. No credit activity yet, and nothing to be impatient about: the account relationship is the foundation for what comes next.
Months 2 to 4. ITIN if you are pursuing consumer products. First secured card or bank-relationship product. Small, regular usage, paid in full, automated.
Months 5 to 7. A score appears once there is enough reported history for the models to generate one. It will be unremarkable. That is correct and expected.
Months 8 to 14. The file has age. Limit increases become possible, sometimes automatically. A second account can be added, deliberately, spaced from the first.
Year two onward. The file is genuinely useful. Better products become available, and the compounding effect of account age starts working for you rather than against you.
Anyone compressing this into ninety days is either describing a product that does not report to the bureaus, or selling you something. Account age is a scored factor and there is no version of the model where it is not.
What this is actually worth
Worth being honest, because the benefit is often oversold alongside the timeline.
Better payment terms with US suppliers is the most concrete commercial benefit, particularly for anyone buying inventory. It is the reason FBA and e-commerce sellers care most about this.
Working capital that is not personal money. A business line of credit gives the company a buffer that does not come from your own account, which matters for businesses with a long cash conversion cycle.
Access to card products with real value, including the travel and points economics that have their own article.
Optionality later. If you ever want a US mortgage, a US lease or serious business financing, the file has to have existed for years before you need it. Starting now is cheap; starting when you need it is impossible.
What it is not worth: contorting your structure for. If the only reason you are forming a US LLC is a credit score, the cost-benefit is thin. It is a good secondary benefit of a structure you needed anyway, and a poor primary reason to build one.
The mistakes that set people back a year
Applying widely and early. Several declines and several hard marks, on a file with nothing else in it.
Missing a payment on the first card. Disproportionate damage, because there is no history to absorb it.
Closing the oldest account. Shortens the average age you spent a year building.
Letting utilisation report high. Paying in full but after the statement date can still show a high balance to the bureaus.
Paying for a service that promises a score. Nobody can sell you a score. They can sell you a product that reports, which is a different and much cheaper thing.
Ignoring the entity’s own standing. A company that has fallen out of good standing or lost its registered agent is not a credible borrower, whatever your personal file says. The annual maintenance is part of this too.
If the credit track is a real part of why you are building a US structure, it is worth designing the banking and the entity with that in mind from the start rather than retrofitting. That is part of what the assessment covers.
Frequently asked questions
Can I build US credit without an SSN?
Yes, though it is slower and the route matters. An ITIN works with many issuers, and some products accept an EIN for business credit that does not depend on your personal file at all. What does not work is expecting the same approvals as a US resident with ten years of history, on the same timeline.
Does my credit history from home transfer?
Essentially no. Credit files are national and do not port between countries. A twenty-year flawless record in Spain, Mexico or the UK gives you nothing in the US file. There are a small number of products designed to bridge this by considering foreign history, and they are the exception rather than the rule.
How long does it take to be useful?
Expect a first score after roughly six months of reported activity on an open account, and a genuinely useful file somewhere past the twelve to twenty-four month mark. Anyone promising a strong score in ninety days is describing something other than how the scoring models work: age of accounts is a scored factor and it cannot be accelerated.
Is business credit separate from personal credit?
It is a separate file, and for a young company it is usually not separate in practice. Most issuers will look at the owner personally when the business has no history, which is why the two tracks tend to be built together rather than independently.