diff --git a/internal/generate.go b/internal/generate.go
index 9e087fd..a0a9c26 100644
--- a/internal/generate.go
+++ b/internal/generate.go
@@ -1,3 +1,3 @@
 package internal
 
-//go:generate mockgen -destination=mocks/mocks_gen.go -package=mocks -typed . RecordReader,Record
+//go:generate go tool mockgen -destination=mocks/mocks_gen.go -package=mocks -typed . RecordReader,Record,ReportWriter
diff --git a/internal/mocks/mocks_gen.go b/internal/mocks/mocks_gen.go
index 04325d7..64430ee 100644
--- a/internal/mocks/mocks_gen.go
+++ b/internal/mocks/mocks_gen.go
@@ -1,9 +1,9 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: git.naterciomoniz.net/applications/broker2anexoj/internal (interfaces: RecordReader,Record)
+// Source: git.naterciomoniz.net/applications/broker2anexoj/internal (interfaces: RecordReader,Record,ReportWriter)
 //
 // Generated by this command:
 //
-//	mockgen -destination=mocks/mocks_gen.go -package=mocks -typed . RecordReader,Record
+//	mockgen -destination=mocks/mocks_gen.go -package=mocks -typed . RecordReader,Record,ReportWriter
 //
 
 // Package mocks is a generated GoMock package.
@@ -105,6 +105,44 @@ func (m *MockRecord) EXPECT() *MockRecordMockRecorder {
 	return m.recorder
 }
 
+// Fees mocks base method.
+func (m *MockRecord) Fees() *big.Float {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Fees")
+	ret0, _ := ret[0].(*big.Float)
+	return ret0
+}
+
+// Fees indicates an expected call of Fees.
+func (mr *MockRecordMockRecorder) Fees() *MockRecordFeesCall {
+	mr.mock.ctrl.T.Helper()
+	call := mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Fees", reflect.TypeOf((*MockRecord)(nil).Fees))
+	return &MockRecordFeesCall{Call: call}
+}
+
+// MockRecordFeesCall wrap *gomock.Call
+type MockRecordFeesCall struct {
+	*gomock.Call
+}
+
+// Return rewrite *gomock.Call.Return
+func (c *MockRecordFeesCall) Return(arg0 *big.Float) *MockRecordFeesCall {
+	c.Call = c.Call.Return(arg0)
+	return c
+}
+
+// Do rewrite *gomock.Call.Do
+func (c *MockRecordFeesCall) Do(f func() *big.Float) *MockRecordFeesCall {
+	c.Call = c.Call.Do(f)
+	return c
+}
+
+// DoAndReturn rewrite *gomock.Call.DoAndReturn
+func (c *MockRecordFeesCall) DoAndReturn(f func() *big.Float) *MockRecordFeesCall {
+	c.Call = c.Call.DoAndReturn(f)
+	return c
+}
+
 // Price mocks base method.
 func (m *MockRecord) Price() *big.Float {
 	m.ctrl.T.Helper()
@@ -257,6 +295,44 @@ func (c *MockRecordSymbolCall) DoAndReturn(f func() string) *MockRecordSymbolCal
 	return c
 }
 
+// Taxes mocks base method.
+func (m *MockRecord) Taxes() *big.Float {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Taxes")
+	ret0, _ := ret[0].(*big.Float)
+	return ret0
+}
+
+// Taxes indicates an expected call of Taxes.
+func (mr *MockRecordMockRecorder) Taxes() *MockRecordTaxesCall {
+	mr.mock.ctrl.T.Helper()
+	call := mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Taxes", reflect.TypeOf((*MockRecord)(nil).Taxes))
+	return &MockRecordTaxesCall{Call: call}
+}
+
+// MockRecordTaxesCall wrap *gomock.Call
+type MockRecordTaxesCall struct {
+	*gomock.Call
+}
+
+// Return rewrite *gomock.Call.Return
+func (c *MockRecordTaxesCall) Return(arg0 *big.Float) *MockRecordTaxesCall {
+	c.Call = c.Call.Return(arg0)
+	return c
+}
+
+// Do rewrite *gomock.Call.Do
+func (c *MockRecordTaxesCall) Do(f func() *big.Float) *MockRecordTaxesCall {
+	c.Call = c.Call.Do(f)
+	return c
+}
+
+// DoAndReturn rewrite *gomock.Call.DoAndReturn
+func (c *MockRecordTaxesCall) DoAndReturn(f func() *big.Float) *MockRecordTaxesCall {
+	c.Call = c.Call.DoAndReturn(f)
+	return c
+}
+
 // Timestamp mocks base method.
 func (m *MockRecord) Timestamp() time.Time {
 	m.ctrl.T.Helper()
@@ -294,3 +370,65 @@ func (c *MockRecordTimestampCall) DoAndReturn(f func() time.Time) *MockRecordTim
 	c.Call = c.Call.DoAndReturn(f)
 	return c
 }
+
+// MockReportWriter is a mock of ReportWriter interface.
+type MockReportWriter struct {
+	ctrl     *gomock.Controller
+	recorder *MockReportWriterMockRecorder
+	isgomock struct{}
+}
+
+// MockReportWriterMockRecorder is the mock recorder for MockReportWriter.
+type MockReportWriterMockRecorder struct {
+	mock *MockReportWriter
+}
+
+// NewMockReportWriter creates a new mock instance.
+func NewMockReportWriter(ctrl *gomock.Controller) *MockReportWriter {
+	mock := &MockReportWriter{ctrl: ctrl}
+	mock.recorder = &MockReportWriterMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockReportWriter) EXPECT() *MockReportWriterMockRecorder {
+	return m.recorder
+}
+
+// Write mocks base method.
+func (m *MockReportWriter) Write(arg0 internal.ReportItem) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Write", arg0)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// Write indicates an expected call of Write.
+func (mr *MockReportWriterMockRecorder) Write(arg0 any) *MockReportWriterWriteCall {
+	mr.mock.ctrl.T.Helper()
+	call := mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Write", reflect.TypeOf((*MockReportWriter)(nil).Write), arg0)
+	return &MockReportWriterWriteCall{Call: call}
+}
+
+// MockReportWriterWriteCall wrap *gomock.Call
+type MockReportWriterWriteCall struct {
+	*gomock.Call
+}
+
+// Return rewrite *gomock.Call.Return
+func (c *MockReportWriterWriteCall) Return(arg0 error) *MockReportWriterWriteCall {
+	c.Call = c.Call.Return(arg0)
+	return c
+}
+
+// Do rewrite *gomock.Call.Do
+func (c *MockReportWriterWriteCall) Do(f func(internal.ReportItem) error) *MockReportWriterWriteCall {
+	c.Call = c.Call.Do(f)
+	return c
+}
+
+// DoAndReturn rewrite *gomock.Call.DoAndReturn
+func (c *MockReportWriterWriteCall) DoAndReturn(f func(internal.ReportItem) error) *MockReportWriterWriteCall {
+	c.Call = c.Call.DoAndReturn(f)
+	return c
+}
diff --git a/internal/record.go b/internal/record.go
index 68b2301..9fa5d68 100644
--- a/internal/record.go
+++ b/internal/record.go
@@ -12,6 +12,8 @@ type Record interface {
 	Price() *big.Float
 	Quantity() *big.Float
 	Timestamp() time.Time
+	Fees() *big.Float
+	Taxes() *big.Float
 }
 
 type RecordQueue struct {
diff --git a/internal/report.go b/internal/report.go
new file mode 100644
index 0000000..6cc582d
--- /dev/null
+++ b/internal/report.go
@@ -0,0 +1,15 @@
+package internal
+
+import (
+	"errors"
+)
+
+type RecordReader interface {
+	// ReadRecord should return Records until an error is found.
+	ReadRecord() (Record, error)
+}
+
+type ReportWriter interface {
+	// ReportWriter writes report items
+	Write(ReportItem) error
+}
diff --git a/internal/reporter.go b/internal/reporter.go
index 1004b17..9d18964 100644
--- a/internal/reporter.go
+++ b/internal/reporter.go
@@ -9,11 +9,6 @@ import (
 	"sync"
 )
 
-type RecordReader interface {
-	// ReadRecord should return Records until an error is found.
-	ReadRecord() (Record, error)
-}
-
 // Reporter consumes each record to produce ReportItem.
 type Reporter struct {
 	reader RecordReader
diff --git a/internal/trading212/record.go b/internal/trading212/record.go
index 4fa598d..403f631 100644
--- a/internal/trading212/record.go
+++ b/internal/trading212/record.go
@@ -39,6 +39,14 @@ func (r Record) Timestamp() time.Time {
 	return r.timestamp
 }
 
+func (r Record) Fees() *big.Float {
+	return new(big.Float) // FIX:
+}
+
+func (r Record) Taxes() *big.Float {
+	return new(big.Float) // FIX:
+}
+
 type RecordReader struct {
 	reader *csv.Reader
 }