diff --git a/src/beanify/base/converter.py b/src/beanify/base/converter.py
index 583c83f..f6f17d1 100644
--- a/src/beanify/base/converter.py
+++ b/src/beanify/base/converter.py
@@ -44,7 +44,7 @@ class ConverterConfig:
         raise NotImplementedError
 
 
-class Converter[RecordT: Record, ConfigT: ConverterConfig]:
+class Converter[RecordT: Record, TxnT: PartialTXN, ConfigT: ConverterConfig]:
     """
     ABC for Record -> Transaction conversion interface.
 
@@ -60,6 +60,7 @@ class Converter[RecordT: Record, ConfigT: ConverterConfig]:
 
     record_type: ClassVar[Type[RecordT]]
     config_type: ClassVar[Type[ConfigT]]
+    txn_type: ClassVar[Type[TxnT]]
 
     def __init__(self, config: ConfigT, **kwargs):
         self.config = config
@@ -68,7 +69,7 @@ class Converter[RecordT: Record, ConfigT: ConverterConfig]:
     def qual_name(cls):
         return f"{cls.converter_name}_v{cls.version}"
 
-    def annotation(self, record: RecordT, partial: PartialTXN) -> Optional[str]:
+    def annotation(self, record: RecordT, partial: TxnT) -> Optional[str]:
         """
         Optional user-readable note/warning to attach to a mapped record.
 
@@ -76,7 +77,7 @@ class Converter[RecordT: Record, ConfigT: ConverterConfig]:
         """
         raise NotImplementedError
 
-    def convert(self, record: RecordT, ruleset: RuleSet) -> PartialTXN | _SKIPT:
+    def convert(self, record: RecordT, ruleset: RuleSet) -> TxnT | _SKIPT:
         """
         The meat of the conversion process.
         Take a raw Record from the data and convert it into a partial transaction,
diff --git a/src/beanify/converters/cba_converter.py b/src/beanify/converters/cba_converter.py
index f0d13c7..03e8263 100644
--- a/src/beanify/converters/cba_converter.py
+++ b/src/beanify/converters/cba_converter.py
@@ -97,9 +97,10 @@ class CBAConfig(ConverterConfig):
 
 
 @available_converter
-class CBAConverter(Converter[CBARecord, CBAConfig]):
+class CBAConverter(Converter[CBARecord, PartialTXN, CBAConfig]):
     record_type = CBARecord
     config_type = CBAConfig
+    txn_type = PartialTXN
     converter_name = "cbacsv"
     version = "0"
     display_name = "CBACSV converter v0"
diff --git a/src/beanify/converters/cbastatement_converter.py b/src/beanify/converters/cbastatement_converter.py
index ab5487a..77a15fe 100644
--- a/src/beanify/converters/cbastatement_converter.py
+++ b/src/beanify/converters/cbastatement_converter.py
@@ -94,9 +94,10 @@ class CBASTConfig(ConverterConfig):
 
 
 @available_converter
-class CBASTConverter(Converter[CBASTRecord, CBASTConfig]):
+class CBASTConverter(Converter[CBASTRecord, PartialTXN, CBASTConfig]):
     record_type = CBASTRecord
     config_type = CBASTConfig
+    txn_type = PartialTXN
     converter_name = "cbast"
     version = "0"
     display_name = "CBAST converter v0"
diff --git a/src/beanify/converters/sample.py b/src/beanify/converters/sample.py
index fdd098f..6daa735 100644
--- a/src/beanify/converters/sample.py
+++ b/src/beanify/converters/sample.py
@@ -65,9 +65,10 @@ class SampleConfig(ConverterConfig):
 
 
 @available_converter
-class SampleConverter(Converter[SampleRecord, SampleConfig]):
+class SampleConverter(Converter[SampleRecord, PartialTXN, SampleConfig]):
     record_type = SampleRecord
     config_type = SampleConfig
+    txn_type = PartialTXN
     converter_name = "sample"
     version = "0"
     display_name = "Sample converter v0"
diff --git a/src/beanify/converters/wise_converter.py b/src/beanify/converters/wise_converter.py
index edd88c9..3585e04 100644
--- a/src/beanify/converters/wise_converter.py
+++ b/src/beanify/converters/wise_converter.py
@@ -213,9 +213,10 @@ class WiseConfig(ConverterConfig):
 
 
 @available_converter
-class WiseConverter(Converter[WiseRecord, WiseConfig]):
+class WiseConverter(Converter[WiseRecord, PartialTXN, WiseConfig]):
     record_type = WiseRecord
     config_type = WiseConfig
+    txn_type = PartialTXN
     converter_name = "wise"
     version = "0"
     display_name = "Wise Record Converter v0"