diff --git a/packages/swift-sdk/Sources/SwiftDashSDK/Tx/TransactionBuilder.swift b/packages/swift-sdk/Sources/SwiftDashSDK/Tx/TransactionBuilder.swift
deleted file mode 100644
index 068d186769c..00000000000
--- a/packages/swift-sdk/Sources/SwiftDashSDK/Tx/TransactionBuilder.swift
+++ /dev/null
@@ -1,53 +0,0 @@
-import Foundation
-
-/// Minimal transaction builder facade exposed by SwiftDashSDK.
-/// Implementation will be wired to FFI in a follow-up; for now it surfaces a stable API.
-public final class SDKTransactionBuilder {
-    public struct Input {
-        public let txid: Data
-        public let vout: UInt32
-        public let scriptPubKey: Data
-        public let privateKey: Data
-        public init(txid: Data, vout: UInt32, scriptPubKey: Data, privateKey: Data) {
-            self.txid = txid
-            self.vout = vout
-            self.scriptPubKey = scriptPubKey
-            self.privateKey = privateKey
-        }
-    }
-
-    public struct Output {
-        public let address: String
-        public let amount: UInt64
-        public init(address: String, amount: UInt64) {
-            self.address = address
-            self.amount = amount
-        }
-    }
-
-    private let feePerKB: UInt64
-    private var inputs: [Input] = []
-    private var outputs: [Output] = []
-    private var changeAddress: String?
-
-    public init(feePerKB: UInt64 = 1000) {
-        self.feePerKB = feePerKB
-    }
-
-    public func setChangeAddress(_ address: String) throws {
-        // TODO: validate address via SDK once available
-        self.changeAddress = address
-    }
-
-    public func addInput(_ input: Input) throws {
-        inputs.append(input)
-    }
-
-    public func addOutput(_ output: Output) throws {
-        outputs.append(output)
-    }
-
-    public func build() throws -> SDKBuiltTransaction {
-        throw SDKTxError.notImplemented("Transaction building is not yet implemented in SwiftDashSDK")
-    }
-}
diff --git a/packages/swift-sdk/Sources/SwiftDashSDK/Tx/TransactionTypes.swift b/packages/swift-sdk/Sources/SwiftDashSDK/Tx/TransactionTypes.swift
deleted file mode 100644
index c47306edfed..00000000000
--- a/packages/swift-sdk/Sources/SwiftDashSDK/Tx/TransactionTypes.swift
+++ /dev/null
@@ -1,21 +0,0 @@
-import Foundation
-
-public struct SDKBuiltTransaction {
-    public let txid: String
-    public let rawTransaction: Data
-    public let fee: UInt64
-}
-
-public enum SDKTxError: LocalizedError {
-    case notImplemented(String)
-    case invalidInput(String)
-    case invalidState(String)
-
-    public var errorDescription: String? {
-        switch self {
-        case .notImplemented(let msg): return msg
-        case .invalidInput(let msg): return msg
-        case .invalidState(let msg): return msg
-        }
-    }
-}