Ask a bank in Zurich for a growth loan and you’ll pay close to nothing for it. Ask the same question in Istanbul and the quote comes back at 37%. Nobody in either room chose that number, and yet it’s going to shape how both businesses grow for years.
Most people treat central bank rates as background noise, the kind of thing currency traders argue about on financial television and everyone else scrolls past. That’s a mistake if you’re actually trying to scale something. The rate is the price of every dollar you borrow to hire, stock up, open a second site or get through a bad quarter. Right now that price swings by more than 37 percentage points depending purely on which country you happen to be building in.
37% versus 0%, same idea
Line up the world’s central banks and the spread is genuinely startling. Turkey holds its policy rate at 37%. Argentina sits at 29%. Nigeria at 26.5%. Brazil and Russia both hover around 14%. Switzerland’s rate, meanwhile, sits at zero. Japan and Thailand hover near 1%. Sweden sits under 2%.
A founder in Lagos or Buenos Aires isn’t paying a slightly worse rate than a founder in Zurich. They’re paying an order of magnitude more for the exact same dollar of growth capital. Two businesses with identical unit economics, identical growth plans and identical execution can end up on completely different trajectories for a reason that has nothing to do with either founder’s ability.
It’s not just the loan that gets expensive
The obvious read is that a high policy rate means expensive business loans. True, but it undersells how far the damage spreads.
High rates push up the return threshold for every kind of capital, not only bank debt. An investor sitting in a 37% rate environment can park money in a government bond and earn a return most early-stage businesses can’t beat on a risk-adjusted basis. Venture and private capital drift toward that safer option, which tightens the whole funding environment on top of the direct cost of borrowing. A founder in a high-rate country isn’t just paying more to borrow. They’re pitching against a government bond that suddenly looks like the smarter bet.
It doesn’t stop there. High rates raise the cost of anything a business finances indirectly, inventory bought on credit, equipment leases, the gap between sending an invoice and actually getting paid. None of that shows up as one dramatic line item. It shows up as margin quietly leaking out of every transaction that touches financing in any form.
Some founders build for this. Most don’t.
The founders who handle a high-rate environment well tend to treat cost of capital as a strategic input from day one, not a line item they’ll deal with once the business is big enough to need a loan. That usually means leaning on organic growth and retained earnings far longer than a founder in a cheap-money country would ever have to. It means squeezing the working capital gap, since every day of receivables outstanding costs measurably more at 26% than at 2%. And it sometimes means going after foreign currency financing, trading currency risk for a lower headline rate, a trade that only works with real discipline around hedging behind it.
The founders who get caught out are the ones who build a growth model assuming financing will show up at roughly the rate they read about in a US or European startup blog post. A playbook built for a founder borrowing at 4% doesn’t transfer cleanly to one borrowing at 26%. The businesses that try to run it anyway usually discover the gap the expensive way, mid-expansion, when a credit facility suddenly costs far more than the model assumed.
This isn’t a reason to give up on hard markets
None of this means founders in high-rate countries can’t scale. Some of the most disciplined, capital-efficient businesses in the world come out of exactly these environments, precisely because their founders never had the luxury of assuming cheap money would show up when they needed it.
It’s an argument for treating a country’s interest rate the way a serious founder already treats local wage costs or regulatory complexity, as a real input into the plan rather than a footnote. A business model that works cleanly in Zurich can fail purely on financing costs in Istanbul, not because the idea was worse, but because nobody priced the cost of the money behind it before writing the plan.
Sources
Trading Economics. Central bank interest rates by country
