Cross-Border Payments & Compliance for Solo Developers

You built something people want. Then the first international customer tries to pay you, and suddenly you're staring at a wall of acronyms: KYC, VAT, PCI-DSS, FATCA, and a dozen country-specific quirks. The good news: as a solo developer, you don't need to solve global payments from scratch. You need a small set of tools and rules that keep you compliant without becoming a part-time accountant.

This article covers the practical path: choosing a payment processor that handles the heavy lifting, understanding the tax and identity obligations that fall on you, and setting up a lightweight workflow you can actually maintain alone.

1. Pick a Merchant of Record (MoR) and Stop Worrying About Tax

The single biggest compliance win for a solo developer is using a Merchant of Record. With a plain payment gateway (Stripe, PayPal), you are the seller of record. You're responsible for calculating, collecting, and remitting sales tax and VAT in every jurisdiction where you sell. That's a nightmare across 40+ countries.

A Merchant of Record takes on that legal role. They calculate tax, collect it, remit it, and handle refunds and chargebacks. You get a single payout.

Popular MoRs for digital products and SaaS:

• Paddle – strong for SaaS and digital goods, handles VAT/GST globally.
• Lemon Squeezy – developer-friendly, good for indie software and licenses.
• FastSpring – established, more enterprise-leaning.

The trade-off is fees (typically 5% + a per-transaction fee) and less control over checkout UX. For a solo developer, that premium is usually cheaper than the hours you'd spend on tax compliance.

If you do want to use Stripe directly, use Stripe Tax to automate calculation, but remember you still own the remittance. Only go this route if you're selling into a small number of countries and are comfortable filing.

2. Know Your KYC and Identity Obligations

Every payment provider will demand proof of who you are and where your business lives. This is Know Your Customer (KYC) and Anti-Money Laundering (AML) compliance, and it's non-negotiable.

Prepare these before you sign up:

• Government ID (passport or national ID).
• Proof of business address (utility bill, bank statement, or incorporation document).
• Business registration if you operate as a company; sole proprietors may only need personal ID.
• Bank account details matching the business name where possible.

A few practical notes:

• Mismatched names cause delays. If your payout account says "John Smith" but your business is "Smith Labs LLC," expect a review request. Keep names consistent.
• Sanctions screening is automatic. If you or your customers are in restricted jurisdictions, payments will be blocked. Don't try to route around it.
• Keep records. Store KYC submissions and provider correspondence. Audits and account reviews happen.

For a one-person company, registering a simple LLC (US) or equivalent local entity often makes onboarding smoother than operating as an individual, because processors see a clear legal counterparty.

3. Handle Currency, Pricing, and Payouts Sanely

Cross-border money movement has friction beyond tax: FX spreads, payout timing, and currency display.

Practical rules:

• Price in the customer's currency where it matters. Displaying local currency (via your MoR or a currency API) reduces abandonment. Let the processor handle conversion.
• Understand the FX spread. Every conversion has a margin, often 1–3%. Build it into your pricing or accept it as a cost of business.
• Watch payout thresholds and timing. International payouts can take 3–10 business days and may have minimum thresholds. Don't rely on same-week cash flow.
• Diversify payout rails. A US-based bank account plus a service like Wise or Payoneer can reduce cost and delay for non-US founders receiving USD.

Avoid holding large balances in a single processor. If an account gets frozen for a compliance review (it happens), you want a second rail ready.

4. Build a Minimal Compliance Workflow

You don't need a compliance department. You need a repeatable checklist.

• One source of truth for tax documents. Keep a folder (or a tool like a password manager's secure notes) with your ID, business docs, and tax IDs.
• Automate receipts and invoices. Most MoRs generate compliant invoices automatically. Verify they include required fields (tax ID, VAT number, itemized tax) for your key markets.
• Track economic nexus thresholds. If you sell via Stripe into the US, states have revenue/transaction thresholds that trigger registration. A spreadsheet updated monthly is enough at solo scale.
• Review provider terms quarterly. Fees and supported countries change. A 15-minute quarterly check prevents surprises.
• Separate business and personal finances. This simplifies KYC, accounting, and any future audit.

Next Steps

1. Decide on your model: MoR (recommended for most solo devs) vs. gateway + Stripe Tax. Write down the trade-off in one sentence.
2. Gather KYC documents into a single secure folder today, before you need them under deadline.
3. Open a second payout rail (e.g., Wise or Payoneer) so a single account freeze doesn't stall your income.
4. Set a quarterly reminder to review fees, supported countries, and nexus thresholds.
5. Test a real international purchase end-to-end from a foreign IP and card to confirm currency, tax, and invoice output look correct.

Compliance isn't glamorous, but a few hours of setup now saves weeks of firefighting later. Start with the MoR decision—it removes the largest chunk of cross-border complexity in one move.