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The short answer
Pay-as-you-build works when the money follows a written stage budget: each stage has a naira cost, a date and a proof-of-work condition, and you convert dollars to naira shortly before each stage rather than all at once or in panic. Keep a contingency of your own choosing on top, and remember that naira held in a Nigerian account counts towards the US FBAR threshold of $10,000 across all foreign accounts.
Most Nigerians in the US build in phases because a lump sum is not available, and that is a sensible way to build. The risk is not the phasing; it is running the build from a monthly salary without a plan, so the site stops whenever a big expense in the US lands. A cash flow plan turns the build into a schedule you can afford, and gives your contractor a reason to keep to it.
Step 1: turn the drawings into a stage budget
Ask your quantity surveyor or contractor for a bill of quantities broken into stages, then add the date each stage is likely to start. The stages most builders use are also the points at which Lagos building control certifies work (foundation, damp-proof course, lintel, roofing), according to the 2026 permit guide we reviewed, which makes them natural payment points.
| Stage (example) | Naira cost (example) | Planned month | Release condition |
|---|---|---|---|
| Permits and mobilisation | ₦4,000,000 | Month 1 | Permit copies received |
| Foundation | ₦9,000,000 | Months 2-3 | Engineer's report and video |
| Blockwork to lintel | ₦12,000,000 | Months 4-6 | Report, photos, invoices |
| Roofing | ₦10,000,000 | Months 7-8 | Roof inspected |
| Windows, plumbing, electrical | ₦11,000,000 | Months 9-12 | Room-by-room video |
| Finishing | ₦14,000,000 | Months 13-16 | Snag list cleared |
| Total | ₦60,000,000 | 16 months |
The figures above are an example only, chosen to make the arithmetic easy; your own bill of quantities sets your numbers. The total in the example checks: 4 + 9 + 12 + 10 + 11 + 14 = ₦60 million.
Step 2: work out what your US income can carry
Divide each stage cost by the months before it starts. In the example, roofing at ₦10 million planned for months 7 to 8 means you need to have set aside that sum in naira terms by month 7. Convert it to a dollar figure using the rate on the day you plan, then add a margin for the rate moving against you. If the monthly dollar figure is more than you can save without touching emergency savings, lengthen the programme rather than borrow against your home; our guide on using a HELOC to build in Nigeria sets out why that choice deserves care.
A contingency you control
Building materials in Nigeria are priced in naira but many are imported or energy-heavy, so prices move. Add a contingency line, for example 10% to 15% of the remaining budget, and hold it yourself rather than handing it to the contractor. In the example, 10% of ₦60 million is ₦6 million kept back for price changes and surprises.
Step 3: decide when to convert
There are two risks pulling in opposite directions. If you convert everything early, you are protected against the naira weakening but the naira itself loses buying power as material prices rise. If you convert late, you keep the value in dollars but take the risk that the rate moves just as a stage is due. Many owners settle on converting each stage's money a few weeks before it starts, once the contractor has confirmed the stage is ready.
- Keep the unspent budget in dollars until a stage is close.
- Convert one stage at a time, at a rate you can see in advance.
- Pay only after the release condition for that stage is met.
- Record the rate and fee for each conversion for your own accounts.
Step 4: the US paperwork
Money you send for a build is your own money, not income, so the transfer itself is not taxable. Two things still matter. First, if you pay from a US provider, federal remittance rules require it to show fees, the rate and the amount to be delivered before you pay, and in most cases give you 30 minutes to cancel and 180 days to report an error. Second, if you park build money in a Nigerian account, the IRS FBAR rule applies when the combined value of your foreign accounts is above $10,000 at any time in the calendar year. The FBAR is filed with FinCEN, not with your tax return, by 15 April with an automatic extension to 15 October. Form 8938 has separate, higher thresholds.
What to check first
- A bill of quantities split into dated stages.
- A monthly savings figure you can keep up without new debt.
- A contingency held by you, not the contractor.
- A conversion rule (for example, per stage, a few weeks ahead).
- Whether your Nigerian balances will cross the FBAR threshold.
For the contract that sits behind this plan, see building with a Nigerian contractor: the contract and protecting each stage payment. The Nigeria-side view is in building a house in Nigeria from abroad.
Where Pryme fits
A Pryme Personal Account opened from the US holds dollars and naira in one place, so the build budget can sit in dollars and move into naira one stage at a time with Swap; the app shows the rate and the fee before you approve. Naira earmarked for a stage can sit in a naira Savings Box until the contractor is ready (Boxes), with naira deposits held by a licensed Nigerian microfinance bank.
Questions people ask
Should I send all my building money to Nigeria at once?
Not usually. Converting stage by stage limits how much is exposed to rate moves and to a contractor who stops work. Release each stage only when its proof-of-work condition is met.
How much contingency should I add when building in Nigeria?
There is no official figure. Many owners add 10% to 15% of the remaining budget for price changes and surprises, and keep it under their own control.
Is sending money to Nigeria to build a house taxed in the US?
Moving your own money is not income, so the transfer is not taxed. Rental income or a sale later is a different matter. Naira balances do count towards the FBAR threshold.
Do I need to file FBAR for a Nigerian account used for building?
Yes, if the combined value of all your foreign accounts was above $10,000 at any time in the calendar year. It is filed with FinCEN by 15 April, extendable to 15 October.
Sources
- Ownkey: Nigeria building permits guide 2026 (21 Jul 2026) · accessed Oct 2026
- CFPB: What is a remittance transfer and what are my rights? (reviewed Oct 2024) · accessed Oct 2026
- IRS: Comparison of Form 8938 and FBAR requirements (reviewed 19 Sep 2026) · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.