diff --git a/models.py b/models.py
index ff8a5b2..9d0e8e7 100644
--- a/models.py
+++ b/models.py
@@ -62,7 +62,7 @@ class UpdateDepositStatusData(BaseModel):
 class CreateDcaPaymentData(BaseModel):
     client_id: str
     amount_sats: int
-    amount_fiat: int
+    amount_fiat: int  # Stored in centavos (GTQ * 100) for precision
     exchange_rate: float
     transaction_type: str  # 'flow', 'fixed', 'manual', 'commission'
     lamassu_transaction_id: Optional[str] = None
@@ -74,7 +74,7 @@ class DcaPayment(BaseModel):
     id: str
     client_id: str
     amount_sats: int
-    amount_fiat: int
+    amount_fiat: int  # Stored in centavos (GTQ * 100) for precision
     exchange_rate: float
     transaction_type: str
     lamassu_transaction_id: Optional[str]
@@ -96,7 +96,7 @@ class ClientBalanceSummary(BaseModel):
 # Transaction Processing Models
 class LamassuTransaction(BaseModel):
     transaction_id: str
-    amount_fiat: int
+    amount_fiat: int  # Stored in centavos (GTQ * 100) for precision
     amount_crypto: int
     exchange_rate: float
     transaction_type: str  # 'cash_in' or 'cash_out'
@@ -107,7 +107,7 @@ class LamassuTransaction(BaseModel):
 # Lamassu Transaction Storage Models
 class CreateLamassuTransactionData(BaseModel):
     lamassu_transaction_id: str
-    fiat_amount: int
+    fiat_amount: int  # Stored in centavos (GTQ * 100) for precision
     crypto_amount: int
     commission_percentage: float
     discount: float = 0.0
diff --git a/transaction_processor.py b/transaction_processor.py
index ceaedd4..6fc5647 100644
--- a/transaction_processor.py
+++ b/transaction_processor.py
@@ -714,9 +714,9 @@ class LamassuTransactionProcessor:
                 # Calculate client's share of the base crypto (after commission)
                 client_sats_amount = int(base_crypto_atoms * proportion)
                 
-                # Calculate equivalent fiat value for tracking purposes
-                # TODO: make client_fiat_amount float with 2 decimal presicion
-                client_fiat_amount = int(client_sats_amount / exchange_rate) if exchange_rate > 0 else 0
+                # Calculate equivalent fiat value in centavos for tracking purposes (industry standard)
+                # Store as centavos to maintain precision and avoid floating-point errors
+                client_fiat_amount = round(client_sats_amount * 100 / exchange_rate) if exchange_rate > 0 else 0
                 
                 distributions[client_id] = {
                     "fiat_amount": client_fiat_amount,
@@ -724,7 +724,7 @@ class LamassuTransactionProcessor:
                     "exchange_rate": exchange_rate
                 }
                 
-                logger.info(f"Client {client_id[:8]}... gets {client_sats_amount} sats (≈{client_fiat_amount} fiat units, {proportion:.2%} share)")
+                logger.info(f"Client {client_id[:8]}... gets {client_sats_amount} sats (≈{client_fiat_amount/100:.2f} GTQ, {proportion:.2%} share)")
             
             return distributions
             
@@ -759,7 +759,7 @@ class LamassuTransactionProcessor:
                     payment_data = CreateDcaPaymentData(
                         client_id=client_id,
                         amount_sats=distribution["sats_amount"],
-                        amount_fiat=distribution["fiat_amount"],
+                        amount_fiat=distribution["fiat_amount"],  # Still store centavos in DB
                         exchange_rate=distribution["exchange_rate"],
                         transaction_type="flow",
                         lamassu_transaction_id=transaction_id,
@@ -802,16 +802,19 @@ class LamassuTransactionProcessor:
                 return False
             
             # Create descriptive memo with DCA metrics
-            fiat_amount = distribution.get("fiat_amount", 0)
+            fiat_amount_centavos = distribution.get("fiat_amount", 0)
             exchange_rate = distribution.get("exchange_rate", 0)
             
+            # Convert centavos to GTQ for display
+            fiat_amount_gtq = fiat_amount_centavos / 100
+            
             # Calculate cost basis (fiat per BTC)
             if exchange_rate > 0:
                 # exchange_rate is sats per fiat unit, so convert to fiat per BTC
                 cost_basis_per_btc = 100_000_000 / exchange_rate  # 100M sats = 1 BTC
-                memo = f"DCA: {amount_sats:,} sats • {fiat_amount:,} GTQ • Cost basis: {cost_basis_per_btc:,.2f} GTQ/BTC"
+                memo = f"DCA: {amount_sats:,} sats • {fiat_amount_gtq:.2f} GTQ • Cost basis: {cost_basis_per_btc:,.2f} GTQ/BTC"
             else:
-                memo = f"DCA: {amount_sats:,} sats • {fiat_amount:,} GTQ"
+                memo = f"DCA: {amount_sats:,} sats • {fiat_amount_gtq:.2f} GTQ"
             
             # Create invoice in target wallet
             extra={
@@ -932,10 +935,10 @@ class LamassuTransactionProcessor:
             # Calculate exchange rate
             exchange_rate = base_crypto_atoms / fiat_amount if fiat_amount > 0 else 0
             
-            # Create transaction data
+            # Create transaction data (store fiat_amount in centavos for consistency)
             transaction_data = CreateLamassuTransactionData(
                 lamassu_transaction_id=transaction["transaction_id"],
-                fiat_amount=fiat_amount,
+                fiat_amount=int(fiat_amount * 100),  # Convert GTQ to centavos
                 crypto_amount=crypto_atoms,
                 commission_percentage=commission_percentage,
                 discount=discount,