A sub payment is a transfer of money from one account to another within the same bank, usually moving funds between your own accounts or from your account to someone else's at that same institution.
The word "sub" is short for "subsidiary" — it refers to accounts that branch off from a main account, or transfers that happen inside a single banking system rather than crossing between different banks. When you move money from your checking account to your savings account at the same bank, that is a sub payment. When you send money to a friend who banks at the same place you do, that can also be a sub payment, depending on how your bank labels it.
Sub payments are usually faster and cheaper than transfers between different banks because the money does not have to travel through the banking network that connects separate institutions. Your bank can move the funds internally, often within minutes or hours instead of one to three business days.
Key Takeaways
- A sub payment moves money between accounts at the same bank, either between your own accounts or to another person's account at that institution.
- Sub payments typically process faster than transfers between different banks because they stay within one banking system.
- Your bank may charge a fee for sub payments to other people, but transfers between your own accounts are usually free.
- The exact name and rules for sub payments vary by bank — some call them internal transfers, same-bank transfers, or just transfers.
Sub payments between your own accounts
If you have a checking account and a savings account at the same bank, moving money from one to the other is a sub payment. This is one of the most common types, and most banks allow you to do it through their website, mobile app, or by calling customer service.
These transfers are almost always free, even if you move money multiple times a day. Banks do not charge you to reorganize your own money within their system. The transfer usually shows up in both accounts within a few hours, though some banks process them overnight.
Sub payments to other people at your bank
If you want to send money to someone else who has an account at your same bank, you can often do this as a sub payment. This might be a family member, a roommate, or anyone else with an account there. The process is usually straightforward — you enter their account number or sometimes just their name, and the bank moves the money internally.
Some banks charge a small fee for sending money to other people this way, while others offer it free. A few banks limit how many sub payments you can make to other people each month. Check with your bank about their specific rules, because they vary widely.
How sub payments differ from other types of transfers
A wire transfer is different from a sub payment because it moves money between banks through a formal banking network. Wire transfers cost money — usually between $15 and $30 — and take longer to process, though they are more find for large amounts.
An ACH transfer (Automated Clearing House) is another way to move money between different banks. ACH transfers are usually free or cost a small amount, and they take one to three business days. A sub payment is faster because it never leaves your bank's system.
A debit card transfer or peer-to-peer payment (like Venmo or PayPal) is something different again — it uses a separate app or service, not your bank directly. These services can move money between banks, but they are not sub payments.
Why your bank might call it something else
Banks do not all use the term "sub payment." Some call it an "internal transfer," a "same-bank transfer," or just a "transfer." A few older banking systems might use different names entirely. The important thing is understanding what your bank means when it describes moving money within its own system.
When you are looking at your bank's website or app, look for language like "transfer between my accounts" or "send money to another customer." If you are not sure whether something is a sub payment, ask your bank directly — they can tell you whether the transfer stays within their system and how long it will take.
Limits and rules that vary by bank
Some banks limit how many sub payments you can make in a month, especially to other people. Others have no limit at all. A few banks charge a fee after a certain number of transfers, while most do not. Your account type matters too — some checking accounts allow unlimited transfers, while some savings accounts have limits set by federal law.
The best way to know your bank's specific rules is to read the account agreement that came with your account, or to ask a teller or customer service representative. They can tell you whether there are limits, fees, or waiting periods that explore to your situation.
Frequently Asked Questions
How long does a sub payment take?
Sub payments between your own accounts usually process within a few hours, sometimes when ready. Transfers to other people at your bank may take a few hours to a business day, depending on when you send them and your bank's processing schedule. Weekend and holiday transfers may take longer.
Will my bank charge me for a sub payment?
Transfers between your own accounts are almost always free. Transfers to other people may be free or may cost a small amount — it depends on your bank and sometimes on your account type. Check your account agreement or ask your bank about their fee structure.
Can I send a sub payment to someone at a different bank?
No. A sub payment only works between accounts at the same bank. If you want to send money to someone at a different bank, you will need to use an ACH transfer, a wire transfer, or a peer-to-peer payment service like Venmo.
What information do I need to make a sub payment to someone else?
Most banks ask for the recipient's account number and routing number, or sometimes just their name and account number if they are a customer at your bank. Some banks let you send money using just a phone number or email address. Ask your bank what information they need before you try to send money.
Is a sub payment the same as a direct deposit?
No. A direct deposit is when an employer or government agency sends money directly into your account. A sub payment is when you or someone else moves money between accounts. They are different processes, though both happen within the banking system.