The direct answer
No — most Nigerian freelancers who own a US LLC cannot fund a SEP IRA or Solo 401(k) through it, and it usually has nothing to do with being a nonresident alien (NRA). The real problem is upstream: if you live and work in Nigeria, your LLC's income is typically foreign-source, not U.S.-taxable self-employment income — and both plans require the latter as their legal foundation.
The real blocker isn't your NRA status — it's where you did the work
A single-member US LLC owned by a foreign person is a "disregarded entity" for federal tax purposes. Its income is only taxed by the US, and only counts as qualifying self-employment income, if it's effectively connected income (ECI) — income tied to a US trade or business (IRS, ECI). For service and digital businesses — consulting, dev work, design, writing — income is generally *not* ECI when all the work is performed outside the US and the LLC has no US employees or office. If it's not ECI, you likely owe no US self-employment tax, which means there's no US-taxable self-employment income to shelter — and a SEP IRA or Solo 401(k) contribution is capped at a percentage of exactly that income (mysolo401k.net; ForeignLLCTax.com). No qualifying income, no contribution room — regardless of citizenship.
This surprises people because the marketing around "tax-free US LLCs" for Nigerians already skips this part: the LLC not owing US tax is a feature for pass-through avoidance, but it's the same reason it can't fund a US retirement account. And forming the LLC doesn't touch your Nigerian tax bill either — Nigeria taxes worldwide income for residents, so the LLC's profit is still yours to declare at home (Keystone Bridge Global).
The narrow case where it does work
If some of your work genuinely happens on US soil — trips where you perform services for US clients while physically present, or a structure that generates real ECI — that portion can qualify. You'd need a US Taxpayer ID (ITIN or SSN), file a US return (1040-NR with the ECI reported), and keep the plan contributions tied strictly to that connected income (mysolo401k.net; McGowin Tax). For most remote-only freelancers, this case doesn't apply. The same logic extends to a Traditional or Roth IRA — an ITIN is enough to open one, but contributions must come from US-source earned income, not the foreign income your LLC is actually generating (Finhabits).
What actually works: Nigeria's Personal Pension Plan
The more realistic tax-advantaged vehicle sits at home. PenCom's Personal Pension Plan (PPP) is a voluntary scheme built specifically for freelancers, informal-sector workers, and the self-employed who don't have a mandatory RSA. You register with a licensed Pension Fund Administrator, contribute at your own pace, and the arrangement is tax-advantaged: contributions are deductible when you file your annual return, and growth compounds without tax drag (NairaCompare, 2026 guide). Pension agents are also expanding access for informal and self-employed workers specifically (Ecofin Agency).
A taxable brokerage account, if you want liquidity
If you want USD-denominated exposure without the tax-advantaged wrapper (and its lock-in), a standard taxable brokerage account — Nigerian platforms with US market access, or a US broker that accepts foreign account holders — gets you invested without pretending your foreign LLC income can fund a US retirement plan it doesn't legally connect to.
Bottom line
Check with a cross-border tax advisor before assuming either path applies to your specific setup — ECI determinations are fact-specific. Kampe doesn't hold or move any of this money; it's a read-only tool for seeing your USD and NGN accounts and plans in one place so you can decide where retirement savings actually belong.