diff --git a/src/main/java/eu/ztsh/wymiana/exception/InsufficientFundsException.java b/src/main/java/eu/ztsh/wymiana/exception/InsufficientFundsException.java
deleted file mode 100644
index 4c8f314..0000000
--- a/src/main/java/eu/ztsh/wymiana/exception/InsufficientFundsException.java
+++ /dev/null
@@ -1,9 +0,0 @@
-package eu.ztsh.wymiana.exception;
-
-public class InsufficientFundsException extends RuntimeException {
-
-    public InsufficientFundsException() {
-        super("Insufficient funds");
-    }
-
-}
diff --git a/src/main/java/eu/ztsh/wymiana/service/CurrencyService.java b/src/main/java/eu/ztsh/wymiana/service/CurrencyService.java
deleted file mode 100644
index 53d401e..0000000
--- a/src/main/java/eu/ztsh/wymiana/service/CurrencyService.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package eu.ztsh.wymiana.service;
-
-import eu.ztsh.wymiana.model.User;
-import eu.ztsh.wymiana.validation.InstanceValidator;
-import eu.ztsh.wymiana.web.model.CurrencyExchangeRequest;
-import lombok.RequiredArgsConstructor;
-import org.springframework.stereotype.Service;
-
-@RequiredArgsConstructor
-@Service
-public class CurrencyService {
-
-    private final UserService userService;
-    private final NbpService nbpService;
-    private final InstanceValidator validator;
-
-    public User exchange(CurrencyExchangeRequest request) {
-        throw new UnsupportedOperationException("Not implemented yet");
-    }
-
-}
diff --git a/src/test/java/eu/ztsh/wymiana/service/CurrencyServiceTest.java b/src/test/java/eu/ztsh/wymiana/service/CurrencyServiceTest.java
deleted file mode 100644
index c49396c..0000000
--- a/src/test/java/eu/ztsh/wymiana/service/CurrencyServiceTest.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package eu.ztsh.wymiana.service;
-
-import eu.ztsh.wymiana.EntityCreator;
-import eu.ztsh.wymiana.RepositoryBasedTest;
-import eu.ztsh.wymiana.data.repository.UserRepository;
-import eu.ztsh.wymiana.exception.InsufficientFundsException;
-import eu.ztsh.wymiana.validation.InstanceValidator;
-import org.junit.jupiter.api.Test;
-import org.mockito.Mockito;
-import org.springframework.beans.factory.annotation.Autowired;
-
-import static eu.ztsh.wymiana.EntityCreator.Constants.*;
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatThrownBy;
-
-class CurrencyServiceTest extends RepositoryBasedTest {
-
-    private final CurrencyService currencyService;
-
-    @Autowired
-    public CurrencyServiceTest(UserRepository userRepository, InstanceValidator instanceValidator) {
-        super(userRepository);
-        var nbp = Mockito.mock(NbpService.class);
-        Mockito.when(nbp.getSellRate("USD")).thenReturn(USD_SELL);
-        Mockito.when(nbp.getBuyRate("USD")).thenReturn(USD_BUY);
-        currencyService = new CurrencyService(new UserService(userRepository, instanceValidator), nbp, instanceValidator);
-    }
-
-    @Test
-    void successTest() {
-        var result = currencyService.exchange(EntityCreator.exchangeRequest()
-            .from(PLN_SYMBOL)
-            .to(USD_SYMBOL)
-            .toSell(PLN)
-            .build());
-        assertThat(result.currencies())
-            .matches(map -> map.get(PLN_SYMBOL).amount() == 0 && map.get(USD_SYMBOL).amount() == USD_BUY);
-    }
-
-    @Test
-    void insufficientFundsTest() {
-        assertThatThrownBy(() -> currencyService.exchange(EntityCreator.exchangeRequest()
-            .from(PLN_SYMBOL)
-            .to(USD_SYMBOL)
-            .toBuy(PLN)
-            .build()))
-            .isInstanceOf(InsufficientFundsException.class);
-    }
-
-}