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The short answer
Buying dollars in the UK to change into naira in Nigeria means paying a conversion margin twice, once from pounds to dollars and again from dollars to naira. It mainly makes sense for costs actually priced in dollars or as an emergency reserve. For everyday spending, a UK card with low foreign fees or naira paid in from home usually costs less. Declare cash of £10,000 or more leaving the UK, and over $10,000 arriving in Nigeria.
Why people carry dollars
Many readers grew up with the habit: change pounds to dollars in London, then change dollars at a bureau in Lagos. Dollars feel more liquid than pounds, and in the past they were easier to sell. But the habit has a cost, and the rules around foreign currency in Nigeria have changed.
Under the CBN FX Manual that took effect in June 2026, TheCable reported that Nigerian entities must generally price and settle in naira, with some sector exemptions. Shops, restaurants, hotels and transport inside Nigeria should be charging in naira, so dollars in your pocket usually have to be sold for naira before you can spend them.
The double conversion cost
Every conversion has a cost: the gap between the rate you get and the mid-market rate, plus any fee. Converting twice pays that cost twice. Worked example, with made-up margins:
| Route | Step 1 | Step 2 | Total cost on £1,000 |
|---|---|---|---|
| Pounds to dollars to naira | 3% margin at a UK bureau: £30 | 2% margin at a Lagos bureau on the £970 left: about £19.40 | About £49.40 |
| Pounds straight to naira | 2% margin | None | £20 |
| UK card with no foreign fee | Card scheme rate, no fee from the bank | None | Close to the scheme rate, plus any ATM operator fee |
The real margins vary by provider, amount and day, so compare the naira you would end up with, not the headline rate. For card costs, see using a Monzo or Starling card in Nigeria and withdrawing naira at a Lagos ATM.
When dollars do make sense
- A cost actually invoiced in dollars that you will pay in cash, where the seller is permitted to accept it.
- Paying into your own domiciliary account in Nigeria, to hold rather than spend.
- A small emergency reserve in case your cards fail, kept separate from your wallet.
- Onward travel to another country where dollars are the easier currency.
For a reserve, a modest amount is enough. A large stack of cash is a theft risk and a declaration question.
Where to change money in Nigeria, if you do
If you arrive with dollars or pounds, the options are a bank, a licensed bureau de change, or a hotel desk. Each quotes its own buying rate, and the gap between buying and selling rates is the margin you pay. A few habits help:
- Ask for the total naira you will receive for your exact amount, not the rate alone.
- Count the notes before you leave the counter, and ask for a receipt.
- Avoid street changers at the airport or in markets: you have no receipt and no recourse if notes are short or fake.
- Change only what you need for a few days at a time; leftover naira is costly to change back.
- Old, torn or marked dollar notes are often refused or bought at a lower rate, so carry clean, recent notes if you carry any.
Selling dollars into your own domiciliary account and then converting through your bank leaves a paper trail, which is useful if you later need to show where money came from.
Cash declaration limits
Leaving the UK
GOV.UK says you must declare cash of £10,000 or more when travelling between Great Britain and a country outside the UK, and that a family or group travelling together must declare if the combined amount is £10,000 or more. Cash includes notes, coins and travellers' cheques. You can declare online up to 72 hours before travel or by phone. For context, US$10,000 was roughly £7,500 at the Bank of England's 22 October 2026 rate. See the UK cash declaration.
Arriving in Nigeria
TheCable's summary of the 2026 FX Manual says you may bring in up to $10,000 in cash without declaration, and amounts above that must be declared on arrival. Declaring is not a tax; failing to declare is the problem. The limits on carrying cash to Nigeria are covered in detail separately.
A sensible travel money mix
- A UK debit card with low or no foreign transaction fees as your main way to pay.
- A second card from a different bank and network, kept apart from the first.
- Naira in a Nigerian account, funded before you fly, for transfers to vendors and family.
- A small cash reserve, in dollars or pounds, for emergencies only.
Many vendors in Nigeria take payment by bank transfer, which makes a funded naira account more useful than cash for many purchases.
Checklist before you fly
- Add up the costs you expect to pay in dollars, if any, and buy only that amount.
- Fund a naira account for the rest, or check your UK card's foreign fees.
- Count the total cash your family group is carrying and declare if it reaches £10,000.
- Split cash and cards between bags and people.
Where Pryme fits
A Pryme account holds GBP and NGN together. Before you travel you can convert pounds straight to naira with Swap, where the rate is shown first and the fee on its own line before you approve, and then pay people in Nigeria by local transfer through Send. That replaces the pounds-to-dollars-to-naira round trip with one conversion. See the multicurrency account.
Questions people ask
Should I take dollars or pounds to Nigeria?
For spending, neither is ideal: prices in Nigeria are generally in naira. Converting pounds to naira once usually costs less than going through dollars.
How much cash can I take from the UK to Nigeria?
There is no UK limit, but you must declare £10,000 or more leaving Great Britain. Nigeria requires declaration above $10,000 on arrival, per reports of the 2026 FX Manual.
Is it cheaper to change money in Lagos or London?
It depends on the day and provider. Compare how much naira you end up with on each route.
Can I pay in dollars in Nigeria?
Under the 2026 FX Manual, Nigerian businesses must generally price and settle in naira, with some sector exemptions.
Sources
- TheCable: CBN FX Manual 2026 (3 Jun 2026) · accessed Oct 2026
- GOV.UK: Take cash in and out of Great Britain · accessed Oct 2026
- Bank of England Database: spot exchange rates · 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.