Running out of stored value on your Octopus card at a busy MTR turnstile is one of those small frustrations that every Hong Kong resident has experienced at least once. The Automatic Add Value Service, commonly known as AAVS, solves this by linking your Octopus to a credit card or bank account so it tops up automatically whenever your balance runs low. Once set up, you never need to queue at a top-up machine again.
This guide explains both versions of the service, walks through the setup process, and covers the practical details that matter most to expats.
What Is the Automatic Add Value Service?
The Automatic Add Value Service (AAVS) is an auto-reload feature offered by Octopus Cards Limited in partnership with 19 financial institutions in Hong Kong. When your Octopus balance drops below zero during a transaction, AAVS triggers an automatic top-up to cover the purchase and restore your balance to the reload amount you selected.
There are two versions of the service. The original AAVS links your Octopus to a credit card. The newer AAVS via FPS links your Mobile Octopus to a bank account through Hong Kong’s Faster Payment System. Both achieve the same result, but they work slightly differently and suit different situations.
Each Octopus can only be reloaded once per day through AAVS. This is a security measure to limit exposure if your card is lost or stolen. The reload is charged to your credit card or debited from your bank account, and the transaction appears on your monthly statement.
AAVS via Credit Card
This is the original and most widely used version. It works with physical Octopus cards, Octopus on iPhone or Apple Watch, Huawei Pay Octopus, and Smart Octopus in Samsung Pay.
How it works: When you tap your Octopus and the remaining balance is not enough to cover the transaction, the system automatically adds your chosen reload amount. The transaction completes without interruption, and the reload charge appears on your next credit card statement.
Reload amounts: You can choose from four options: HK$150, HK$250, HK$500, or HK$1,000. If you mainly use your Octopus for MTR rides and occasional convenience store purchases, HK$250 is usually sufficient. If you also use it for groceries at ParknShop or Wellcome, or for regular restaurant payments, HK$500 or HK$1,000 may be more practical.
Participating banks: 19 financial institutions support AAVS, including HSBC, Hang Seng Bank, Bank of China, China Construction Bank (Asia), DBS Bank, Standard Chartered, Citibank, Dah Sing Bank, ICBC (Asia), Bank of East Asia, and others. The full list is available on the Octopus AAVS page. Most major credit cards issued in Hong Kong are eligible.
How many Octopus cards can you link? You can link up to five Octopus cards for yourself across different credit cards. You can also set up AAVS on up to three additional Octopus cards for family members or friends, as long as they are at least 12 years old. That gives a maximum of eight AAVS-linked Octopus cards per credit card holder.
Application fee: There is no fee for first-time AAVS setup. Cancellation is also free.
AAVS via FPS (Bank Account)
This newer option is available exclusively for Mobile Octopus users (Octopus on iPhone, Apple Watch, or Android devices). Instead of linking to a credit card, it connects directly to your bank account through Hong Kong’s Faster Payment System (FPS).
How it works: The mechanism is similar to the credit card version. When your Mobile Octopus balance is insufficient, the system tops up automatically from your linked bank account. The key advantage is that you do not need a credit card at all, and there is no waiting for a monthly credit card bill. The amount is debited directly from your account.
Reload amounts: Currently fixed at HK$500 or HK$1,000 only. The smaller HK$150 and HK$250 options available with credit card AAVS are not offered for the FPS version.
Setup: You need to be an Octopus Wallet Pro (verified) or Plus user and have FPS electronic Direct Debit Authorisation (eDDA) set up with your bank. Once that is in place, you can activate AAVS via FPS directly in the Octopus App without any paper application. The entire process takes a few minutes.
Offline functionality: One particularly useful feature is that AAVS via FPS works even when your phone has no battery or no internet connection, because the Octopus chip in your device operates independently of the phone’s software.
Which Version Should You Choose?
The right choice depends on your payment setup in Hong Kong and how you use your Octopus.
| Feature | AAVS via Credit Card | AAVS via FPS |
|---|---|---|
| Works with | Physical card, iPhone, Apple Watch, Samsung, Huawei | Mobile Octopus only (iPhone, Apple Watch, Android) |
| Reload amounts | HK$150, HK$250, HK$500, HK$1,000 | HK$500 or HK$1,000 only |
| Payment source | Credit card | Bank account (via FPS) |
| Application | Via bank or Octopus App | In-app (instant) |
| Credit card rewards | Yes (earns cashback/miles on reloads) | No |
| Monthly bill | Appears on credit card statement | Debited directly from bank |
| Physical card support | Yes | No |
Choose credit card AAVS if you want to earn credit card rewards on your Octopus spending (some cards offer 0.4 to 1 percent cashback on AAVS reloads), if you use a physical Octopus card, or if you prefer the flexibility of smaller reload amounts.
Choose FPS AAVS if you do not have a Hong Kong credit card yet, if you prefer direct bank debits over credit card billing, or if you want instant setup without paperwork. This is often the better option for expats who have just arrived and have a bank account but are still waiting for their credit card application to be approved.
Many regular users in Hong Kong set up credit card AAVS specifically to accumulate credit card rewards on everyday Octopus spending. Over a year, the cashback or miles earned on MTR fares, bus rides, and convenience store purchases can add up meaningfully.
How to Set Up AAVS (Step by Step)
Credit Card AAVS
Step 1: Check that your credit card issuer is one of the 19 participating banks. Most major Hong Kong bank credit cards qualify.
Step 2: Apply through one of these channels. You can apply online through your bank’s website or mobile app (HSBC, DBS, Hang Seng, and most major banks offer this). You can also apply through the Octopus App by selecting “AAVS” in the settings menu. Alternatively, some banks accept applications at their branch counters.
Step 3: Select your preferred reload amount: HK$150, HK$250, HK$500, or HK$1,000.
Step 4: Provide your Octopus card number (the 9-digit number on the back of your card or in the Octopus App under card details).
Step 5: Once approved, activate the service by making any transaction with your Octopus at an MTR turnstile, bus, or any merchant that accepts Octopus. The first AAVS reload will trigger when your balance next drops below zero.
Processing typically takes 5 to 10 working days from application to activation.
FPS AAVS
Step 1: Ensure you have the Octopus App installed and your account is upgraded to Wallet Pro (verified) or Plus status.
Step 2: Set up FPS eDDA (electronic Direct Debit Authorisation) with your bank. This can be done through your bank’s mobile app.
Step 3: Open the Octopus App, navigate to “Auto Add Value” settings, and select “AAVS via FPS.”
Step 4: Choose your reload amount (HK$500 or HK$1,000) and confirm.
The service activates immediately. There is no processing delay.
Supported banks for FPS AAVS: Most major retail banks in Hong Kong support FPS eDDA, including HSBC, Hang Seng, Bank of China, Standard Chartered, DBS, and others. However, some virtual banks may have limited FPS eDDA support, so it is worth checking with your bank before attempting setup.
What Happens If Your Card Is Lost or Stolen?
Because AAVS links your Octopus to a credit card or bank account, protecting your card matters more than it would with a basic stored-value card.
Report the loss immediately. Call the Octopus hotline at 2266 2222 to suspend your card. For credit card AAVS, you should also notify your credit card issuer to block any further AAVS charges. The one-reload-per-day limit provides some built-in protection, meaning the maximum unauthorised charge would be your chosen reload amount (up to HK$1,000) plus whatever stored value remained on the card.
Refund of remaining balance. After reporting the loss, Octopus will arrange to refund the remaining stored value on the card, minus a HK$30 handling fee. The refund is typically issued as a cheque or bank transfer and takes around six to eight weeks to process.
Reactivate AAVS on your replacement card. Once you purchase a new Octopus card (HK$50 deposit at any MTR Customer Service Centre), you will need to set up AAVS again from scratch. The service does not automatically transfer to a new card. If you use Mobile Octopus on your iPhone or Apple Watch, you can remove the lost card from your Wallet app and add a new one, then re-enable AAVS through the Octopus App.
Consider enabling notifications. If your bank’s app supports transaction alerts, turn them on for your AAVS-linked credit card. This way, you will receive a push notification every time a reload is triggered, making it easy to spot any unauthorised use immediately.
Other Ways to Top Up Your Octopus
If you prefer not to set up AAVS, Hong Kong offers plenty of manual top-up options.
MTR stations have dedicated add-value machines that accept cash and some accept EPS (debit card) payments. You can also top up at any MTR Customer Service Centre. The maximum stored value on an Octopus card is HK$3,000.
Convenience stores including 7-Eleven, Circle K, and OK Stores can top up your card with cash at the counter. Simply hand over your card and tell the cashier how much you want to add.
The Octopus App allows you to top up your Mobile Octopus using a credit card, debit card, or bank transfer at any time. This is useful if you want to add value immediately before a specific purchase.
Online banking through most Hong Kong banks lets you transfer funds to your Octopus. HSBC, Hang Seng, and BOC all offer this through their mobile apps.
For most expats who use their Octopus daily for commuting and small purchases, AAVS remains the most convenient option because it eliminates the need to think about topping up entirely.
Tips for Expats Setting Up AAVS
Start with FPS if you are new. Many expats arrive in Hong Kong and open a bank account within the first week but wait several weeks for credit card approval. AAVS via FPS lets you set up auto-reload immediately using your bank account.
Switch to credit card AAVS once your card arrives. This lets you earn rewards on spending you would do anyway. Even modest cashback rates add up when applied to daily commuting and convenience store purchases across an entire year.
Check your bank’s AAVS promotion. HSBC, Hang Seng, and other banks periodically offer bonuses for new AAVS signups, typically HK$50 to HK$200 in Octopus value or credit card rewards. It is worth checking your bank’s promotions page before applying.
Set an appropriate reload amount. If you commute by MTR daily and buy coffee at a convenience store, HK$250 will last roughly one to two weeks. If your household uses Octopus for supermarket groceries, HK$500 or HK$1,000 is more practical to avoid triggering the once-per-day reload limit on a busy shopping day.
Link family members’ cards to your AAVS. If your spouse or children (aged 12 and over) use Octopus cards, you can link up to three of their cards to your credit card AAVS. This saves them from having to manage their own top-ups.
