AI agents for business finance: what they can and can't do
What AI agents can do in bookkeeping, close, collections and compliance today, where a person must stay in charge, and how to judge a product.
The short answer
Nigerian BDCs and banks often pay a lower naira rate for older-series US notes and for $1 to $50 bills than for newer $100 notes, because older designs are harder to check for forgery and small notes cost more to handle and ship per dollar. US authorities say all US currency remains legal tender at face value, so the discount is a dealer's pricing choice, not a rule; you can reduce it by asking for quotes by denomination, depositing notes into a domiciliary account where your bank accepts them, or receiving dollars electronically.
Old notes are still valid money
The US Currency Education Program, run by the Federal Reserve, states that US notes remain legal tender regardless of when they were issued. An older $100 bill is worth $100 in the United States. In Nigeria, though, dealers are free to set their own buying price, and many pay less for notes they consider old, worn or small.
Why dealers pay less
- Forgery checks. Newer designs carry more security features; the current $100 note, for example, has a blue security ribbon. Older series are easier to counterfeit and take longer to check.
- Shipping and handling. Dealers and banks that send cash abroad pay per note and per shipment. A bundle of $10 bills worth $500 costs ten times as many notes to move as five $100 bills.
- Demand. Travellers and payers abroad usually want large, recent notes, so dealers can resell those more easily.
- Condition. Torn, marked, stamped or written-on notes may be refused or bought at a deeper discount.
What counts as 'old'
There is no CBN definition. Each dealer sets its own cut-off, usually by the series year printed on the face of the note and by design, with traders using informal labels for older and newer $100 designs. One BDC may accept a note another discounts. Ask before you sell, and ask in writing for a rate per denomination and series.
Worked example (illustrative figures)
Example only. A BDC quotes 1,400 for recent $100 notes and 1,370 for small or older notes. Selling $500 as five recent $100 notes gives ₦700,000. Selling the same $500 as small or older notes gives ₦685,000. The discount costs ₦15,000, or about 2.1% of the higher figure.
How to avoid the discount
- Ask family or clients abroad to send dollars electronically rather than as cash.
- If you are given cash, ask for recent, clean $100 notes.
- Ask your bank whether it accepts the notes for deposit into a domiciliary account and at what condition standard; see depositing dollar cash.
- Get written quotes from two licensed BDCs per denomination before you sell.
- Store notes flat and dry; do not write on, fold tightly or staple them.
For your other selling options, see where to sell dollars in Nigeria and the $500 comparison.
If the notes came from abroad
Relatives travelling home often bring small notes because that is what they had. A short message before they travel, asking for recent $100 notes or for an electronic transfer instead, usually saves more than haggling with a dealer afterwards. If you regularly receive small amounts, letting them build up in a dollar balance and converting once costs less than selling a few notes at a time, because each cash sale carries its own discount and trip. Keep any receipt from the bank or BDC that supplied the notes; it helps if a later buyer questions them.
Where Pryme fits
Pryme does not take cash notes. If your dollars arrive electronically into a Pryme account, they stay in dollars until you choose to convert, and Swap shows the rate and fee before you approve, with no note-size discount to worry about.
Questions people ask
Why do BDCs pay less for small dollar notes?
Small notes cost more per dollar to count, check and ship, and demand is lower, so many dealers pay a lower rate for them.
Are old dollar notes still valid?
Yes. The US Federal Reserve's currency education programme states US notes remain legal tender regardless of issue date. Nigerian dealers can still pay less for them.
What is the difference between big head and small head dollar?
They are informal trader labels for newer and older $100 designs. Each dealer sets its own cut-off, so ask before you sell.
Can I deposit old dollar notes in a domiciliary account?
Ask your bank. Banks set their own acceptance standards for note condition and series.
Sources
- U.S. Currency Education Program (Federal Reserve): U.S. currency · accessed Oct 2026
- Central Bank of Nigeria: Exchange Rates (NFEM daily rates and history) · 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.