Two Different Forms of Payment
A person can pay for lunch with banknotes or use a debit card linked to a checking account. Both methods can transfer purchasing power to the seller, but the things transferred are different. With cash, currency changes hands. With a deposit payment, the buyer instructs a bank to reduce one account balance and increase another. Keeping those distinctions clear helps explain why both can serve as means of payment without being the same kind of claim.
This tutorial focuses on currency held by the public and transferable bank deposits. The operational boundary of a reported money measure depends on its stated definition; the key concepts here are what these two forms are and how they work in payment. The discussion is aligned with the SOA VEE Economics (Validation by Educational Experience) syllabus.
Currency is a physical object. A bank deposit is not a pile of notes stored for the account holder. It is a financial claim: the bank owes the account holder the amount shown in the account, under the account’s terms. When a deposit payment is completed, the account holder’s claim is reduced and the recipient’s claim is increased. A transfer does not normally require the payer to hand over particular banknotes.
In this context, transferable means that the account balance can be used to make payments to another person or business, rather than merely being an account balance that cannot be spent directly in that way. Transferability is a feature of the account and its payment arrangements. It does not mean that every bank deposit has identical withdrawal rules or can be transferred in every circumstance.
How Each Form Makes a Payment
A means of payment must enable a buyer to discharge a payment obligation and enable a seller to receive something accepted in exchange. Currency can do this directly when the seller accepts the notes or coins. A transferable deposit can do it through a payment instruction that results in a change in account balances. In a deposit payment, the buyer’s deposit claim is the money being transferred; a card, cheque, or electronic instruction is a way of initiating or authorizing that transfer.
| Feature | Currency held by the public | Transferable bank deposit |
|---|---|---|
| Form | Physical notes and coins | An account balance recorded by a bank |
| Claim or object | The currency itself is held by its bearer | A claim by the account holder against the bank |
| How it pays | The payer hands the currency to the recipient | A payment instruction changes the relevant deposit balances |
| Example of an access or payment method | Handing over notes or coins | Using a cheque, debit card, or electronic transfer |
The table separates the money from the method used to pay. A debit card is not itself the deposit balance; it can provide a way to authorize a transaction against that balance. Similarly, a cheque is an instruction to make a deposit payment, not the currency being paid. A digital display of an account balance shows a claim; it does not turn that claim into physical cash.
Currency and deposits also differ in who owes what to whom. Currency in a person’s possession is not that person’s claim against a commercial bank account. A deposit, by contrast, is a liability of the bank to its account holder. This difference matters even when both forms are readily used to make purchases. The recipient gets physical currency in one case and a bank deposit claim in the other.
Why Both Count as Means of Payment
The relevant similarity is their payment function, not their legal or physical form. If a buyer hands an accepted note to a seller, the buyer has transferred currency and the seller has received it. If a buyer makes a completed payment from a transferable deposit, the buyer’s claim against the bank falls and the seller’s claim against a bank rises. In each case, the seller receives a form of purchasing power that can be used for payments, subject to acceptance and the relevant arrangements.
A simple accounting identity helps keep the two forms separate. Let \(C\) denote currency held by the public and \(D\) denote transferable deposits held by the public. In a simplified setting where the payment involves only these forms and the stated boundary includes both, their combined amount is \(C+D\). This notation is useful for tracking changes, but it does not imply that every deposit belongs in every operational measure of money.
For a payment that transfers a deposit from one member of the public to another, the payer’s deposit falls by the payment amount while the recipient’s deposit rises by the same amount. If both balances are included in \(D\), the change in the total is zero. For a cash payment between two members of the public, currency moves from payer to recipient; the total currency held by the public is unchanged, although each person’s holding changes. These statements describe transfers between holders, not situations where currency or deposits enter or leave the stated boundary.
This reasoning does not mean that every purchase leaves every measure of money unchanged. The result depends on the stated boundary and on the payment’s path. For example, a transaction involving a recipient outside the defined group of holders may change the amount measured within that group. Here the point is narrower: a transfer between two included holders redistributes a form of payment rather than creating an additional unit of it.
Worked Examples
Worked Example: Separating Cash and Deposit Balances
In a hypothetical transaction, Leena begins with $80.00 in currency and a $620.00 transferable checking deposit. She pays a repair shop $26.00 in cash and then makes a completed $74.00 payment from her checking account to the shop’s account. Assume the shop is part of the public, both deposit accounts are included in the deposit total being tracked, and there are no fees or other transactions. Find Leena’s ending balances and the changes in the public’s total currency and deposits caused by these payments.
Method and calculation. Track each form separately. The cash payment reduces Leena’s currency holding:
Her checking deposit is reduced by the deposit payment:
The shop receives $26.00 in currency and a $74.00 deposit. Since the cash moves between two members of the public, Leena’s currency falls by $26.00 while the shop’s rises by $26.00. Thus the change in total currency held by the public is \(-\$26.00+\$26.00=\$0.00\). The deposit payment reduces Leena’s deposit by $74.00 and increases the shop’s by $74.00, so the change in the tracked deposit total is \(-\$74.00+\$74.00=\$0.00\).
Check and mistake avoided. Leena’s ending balances are $54.00 in currency and $546.00 in her checking account. The payment amounts add to $26.00+$74.00=$100.00, matching the $100.00 total reduction in her own holdings. A common mistake is to treat the $74.00 deposit transfer as a decrease in deposits for the public as a whole; the shop’s deposit rises by the same amount.
Worked Example: A Card Payment Is Not Currency
In a hypothetical purchase, Mateo has $65.00 in cash and a $500.00 transferable deposit. He buys equipment for $178.75, paying $40.00 in cash and the rest using a debit card linked to his account. Assume the card payment is completed, there are no fees, and the seller is part of the public. Find the card payment amount and Mateo’s remaining balances. Identify what the seller receives in each part of the transaction.
Method and calculation. First subtract the cash portion from the purchase price:
The completed debit-card payment therefore reduces Mateo’s deposit by $138.75. His remaining deposit is:
His remaining currency is:
The seller receives $40.00 in physical currency and a $138.75 deposit claim through the completed account transfer. The debit card is the access and authorization method for the deposit payment; it is not an additional $138.75 of money.
Check and mistake avoided. Mateo’s total reduction is $40.00+$138.75=$178.75, exactly the purchase price. The common mistake is to call the card itself the money received. The seller receives currency and a deposit, while the card facilitates the transfer of the deposit.
Worked Example: Only the Transferable Balance Pays Directly
A hypothetical customer has $45.00 in currency, a $840.00 checking deposit that permits payments to other people, and a separate $1,200.00 deposit whose stated terms do not permit direct payments to recipients. The customer pays a contractor $325.00 by a completed check drawn on the checking account and pays a supplier $30.00 in cash. Assume there are no fees, other transactions, or withdrawals from the separate deposit. Find the customer’s ending balances and state which claims were transferred directly as payment.
Method and calculation. The check payment is drawn on the transferable checking balance, so:
The customer’s remaining currency is:
The separate $1,200.00 deposit is unchanged because the problem states that it cannot be used for direct payments and that no withdrawal is made. The contractor receives a deposit payment of $325.00; the supplier receives $30.00 in currency.
Check and mistake avoided. The customer’s ending balances are $515.00 in the checking account, $1,200.00 in the separate deposit, and $15.00 in currency. The direct payments total $325.00+$30.00=$355.00. The sum of the customer’s three starting balances was $45.00+$840.00+$1,200.00=$2,085.00, and the ending sum is $15.00+$515.00+$1,200.00=$1,730.00; the $355.00 difference equals the payments. The trap is to assume that every bank deposit can be used directly as a means of payment merely because it is a bank balance.
Common Errors and Practical Significance
The distinction matters when describing a transaction, interpreting an account balance, or deciding what has changed hands. A person who pays with currency gives the recipient physical notes or coins. A person who pays from a deposit transfers a claim against a bank, using a payment arrangement to change account balances. Both can enable purchases, but the recipient does not receive the same kind of asset in each case.
- Confusing a payment method with the money. A debit card or cheque can initiate a deposit payment; neither is the deposit balance itself.
- Treating a deposit as physical cash. A deposit is a bank liability to an account holder, not a specific set of notes held on that person’s behalf.
- Assuming all deposits are directly transferable. Account terms differ. Check whether a balance can be used to make payments to others before treating it as transferable.
- Assuming a payment between holders changes the total held by the public. If both sides are within the stated boundary, the transaction redistributes the relevant form: one holder’s decrease is matched by another holder’s increase.
- Ignoring the recipient’s asset. In a deposit payment, the payer’s balance falls and the recipient’s rises. Tracking only the payer can make a transfer look like an overall disappearance.
Currency and transferable deposits are therefore alike in their usefulness for payment but different in form and in the claims they represent. Keeping both features in view prevents a common category error: treating everything used to initiate a payment as if it were the same kind of money.
Check Your Understanding
For each problem, distinguish the form of payment from any instrument used to initiate it, and track the balances specified.
- A customer has $52.00 in cash and a $410.00 transferable deposit. The customer pays $17.00 in cash and makes a completed $63.00 deposit payment to a local seller. Assuming both parties are within the public boundary, find the customer’s ending balances and the changes in total public currency and deposits. (Answer: Customer: $35.00 currency and $347.00 deposit; public currency change $0.00 and deposit change $0.00.)
- A buyer pays a $96.40 bill with $21.40 in currency and a completed debit-card payment for the remainder. The buyer began with $300.00 in a transferable deposit and $40.00 in currency. Find the card payment and ending balances, and identify what the seller receives. (Answer: Card payment $75.00; ending balances $225.00 deposit and $18.60 currency; seller receives a $75.00 deposit and $21.40 currency.)
- A business has $700.00 in a transferable deposit and $900.00 in another deposit that its account terms do not permit it to use for direct payments. It pays a supplier $280.00 by completed electronic transfer and pays a courier $35.00 in cash. What are its ending balances, and which amount is a deposit payment? (Answer: $420.00 transferable deposit, $900.00 other deposit, and $35.00 less currency than its starting holding; the $280.00 transfer is the deposit payment.)
- A customer pays a $125.00 bill using a $50.00 cash payment and a completed $75.00 deposit transfer. The customer’s deposit falls by $75.00, while the seller’s deposit rises by $75.00; both are within the stated boundary. How much does the total tracked deposit amount change, and how much does total public currency change if the cash passes to the seller? (Answer: Deposit total changes by $0.00; total public currency changes by $0.00.)
- A person begins with $90.00 in currency and a $260.00 transferable deposit, then makes a $25.00 cash payment and a completed $105.00 check payment. The recipient is within the public boundary, and both deposit accounts are included in the deposit total. Find the person’s ending balances and verify that the reduction in the person’s holdings equals the total payment. (Answer: $65.00 currency and $155.00 deposit; total payment is $130.00, equal to the reduction from $350.00 to $220.00.)