AVM Resource Limits
All values are consensus parameters enforced by the protocol. Current AVM version: 12 (consensus v41).
Program Limits
| Parameter |
Value |
Consensus Variable |
| Program page size |
2048 bytes |
MaxAppProgramLen |
| Max extra pages |
3 |
MaxExtraAppProgramPages |
| Max total program size |
8192 bytes |
2048 × (1 + 3) |
| Logic Signature max size |
1000 bytes |
LogicSigMaxSize |
| Logic Signature max cost |
20,000 |
LogicSigMaxCost |
Execution Limits
| Parameter |
Value |
Consensus Variable |
| Opcode budget per app call |
700 |
MaxAppProgramCost |
| Max pooled budget (16 app calls) |
11,200 |
700 × 16 |
| Max pooled with inner txns |
190,400 |
700 × (16 + 256) |
| Stack depth |
1000 values |
MaxStackDepth |
Max bytes value size |
4096 bytes |
MaxStringSize |
| Scratch space slots |
256 |
— |
Transaction Limits
| Parameter |
Value |
Consensus Variable |
| Max group size |
16 transactions |
MaxTxGroupSize |
| Max inner transactions per app call |
16 |
MaxInnerTransactions |
| Max inner transactions per group (pooled) |
256 |
16 × MaxTxGroupSize |
| Max inner transaction depth |
8 levels |
Hardcoded in protocol spec |
| Min transaction fee |
1000 microAlgo |
MinTxnFee |
State Storage Limits
Global State
| Parameter |
Value |
| Max key-value pairs |
64 |
| Max key size |
64 bytes |
| Max key + value size |
128 bytes (MaxAppSumKeyValueLens) |
A 64-byte key leaves only 64 bytes for the value. Plan key names accordingly.
Local State (per account per app)
| Parameter |
Value |
| Max key-value pairs |
16 |
| Max key size |
64 bytes |
| Max key + value size |
128 bytes (MaxAppSumKeyValueLens) |
Same combined limit as global state — key + value must fit in 128 bytes.
Box Storage
| Parameter |
Value |
| Max box size |
32,768 bytes (32 KB) |
| Box name min |
1 byte |
| Box name max |
64 bytes |
| Max boxes per app |
Limited only by MBR funding |
| I/O budget per box reference |
2,048 bytes |
Box I/O budget: Each box reference in a transaction provides 2,048 bytes of read/write budget. Boxes larger than 2,048 bytes require multiple box references (⌈box_size / 2048⌉). For example, a 6,000-byte box needs at least 3 box references.
Application Call Limits
| Parameter |
Value |
| Max app arguments |
16 |
| Max total argument bytes |
2048 |
| Max foreign accounts |
8 |
| Max foreign assets |
8 |
| Max foreign apps |
8 |
| Max box references |
8 |
| Max total references (shared across all types) |
8 |
| Max access list entries (v12+) |
16 |
The MaxAppTotalTxnReferences = 8 limit means the combined total of foreign accounts, assets, apps, and box references is 8 — not 8 of each type. In AVM v12+, the txn.Access list is a mutually exclusive alternative supporting up to 16 entries.
Logging Limits
| Parameter |
Value |
| Max log calls per app call |
32 |
| Max total log bytes per app call |
1024 |
Minimum Balance Requirements (MBR)
Account MBR
| Item |
MBR (microAlgo) |
| Base account |
100,000 |
| Per opted-in asset |
+100,000 |
| Per created asset |
+100,000 |
| Per opted-in application |
+100,000 |
| Per created application |
+100,000 |
Application State MBR
| State Type |
Per uint64 Slot |
Per bytes Slot |
| Global state |
28,500 µAlgo |
50,000 µAlgo |
| Local state (per opt-in) |
28,500 µAlgo |
50,000 µAlgo |
Formula: SchemaMinBalancePerEntry(25,000) + SchemaUintMinBalance(3,500) for uint64, SchemaMinBalancePerEntry(25,000) + SchemaBytesMinBalance(25,000) for bytes.
Box Storage MBR
Box MBR = 2,500 + 400 × (box_name_length + box_value_length)
| Example |
Calculation |
MBR |
| 1-byte name, 100-byte value |
2,500 + 400 × 101 |
42,900 µAlgo |
| 4-byte name, 1024-byte value |
2,500 + 400 × 1,028 |
413,700 µAlgo |
| 32-byte name, 32,768-byte value |
2,500 + 400 × 32,800 |
13,122,500 µAlgo (~13.1 Algo) |
Extra Program Pages MBR
Each extra program page adds 100,000 µAlgo to the app creator's MBR.
Transaction Fees
| Fee Type |
Amount |
| Minimum fee |
1,000 µAlgo per transaction |
| Fee pooling in groups |
Excess fee on one txn covers deficit on another |
| Inner transaction fees |
Can be 0 if outer txn covers via fee pooling |
