Something

        ' Declare the value of service charge
        servicecharge = 10
        transaction = TextBox1.Text
        
        ' Deposit Funds to the account
        If RadioButton1.Checked = True Then
            Label3.Text = Label3.Text + TextBox1.Text
        End If


        If RadioButton2.Checked Then
            If Label3.Text > TextBox1.Text Then
                Label3.Text = Label3.Text - TextBox1.Text
            ElseIf TextBox1.Text > Label3.Text Then
                MessageBox.Show("Insufficient Funds")
                Label3.Text = Label3.Text - servicecharge
            End If
        End If

        If RadioButton3.Checked = True Then
            Label3.Text = Label3.Text - servicecharge
        End If