diff --git a/report_profit_loss.php b/report_profit_loss.php
index f85fd075..16cd4037 100644
--- a/report_profit_loss.php
+++ b/report_profit_loss.php
@@ -1,17 +1,42 @@
 <?php include("header.php"); ?>
 
-<?php $sql = mysqli_query($mysqli,"SELECT * FROM categories WHERE category type =  'Expense' ORDER BY vendor_id DESC"); ?>
+<?php
 
+if(isset($_GET['year'])){
+  $year = intval($_GET['year']);
+}else{
+  $year = date('Y');
+}
+
+//GET unique years from expenses and payments
+$sql_all_years = mysqli_query($mysqli,"SELECT YEAR(expense_date) AS all_years FROM expenses UNION DISTINCT SELECT YEAR(payment_date) FROM payments ORDER BY all_years DESC");
+
+$sql_categories_income = mysqli_query($mysqli,"SELECT * FROM categories WHERE category_type =  'Income' ORDER BY category_name ASC");
+
+$sql_categories_expense = mysqli_query($mysqli,"SELECT * FROM categories WHERE category_type =  'Expense' ORDER BY category_name ASC");
+
+
+?>
 
 <div class="card mb-3">
   <div class="card-header">
-    <h6 class="float-left mt-1"><i class="fa fa-coins"></i> Profit & Loss</h6>
-    <button type="button" class="btn btn-primary btn-sm float-right" data-toggle="modal" data-target="#print"><i class="fas fa-print"></i> Print</button>
-    <select class="form-control mt-5">
-      <option>2019</option>
-      <option>2018</option>
-      <option>2017</option>
-    </select>
+    <h6 class="float-left mt-1"><i class="fa fa-balance-scale"></i> Profit & Loss</h6>
+    <button type="button" class="btn btn-primary btn-sm float-right d-print-none" onclick="window.print();"><i class="fas fa-print"></i> Print</button>
+    <form>
+      <select onchange="this.form.submit()" class="form-control mt-5" name="year">
+        <?php 
+                
+        while($row = mysqli_fetch_array($sql_all_years)){
+          $all_years = $row['all_years'];
+        ?>
+        <option <?php if($year == $all_years){ ?> selected <?php } ?> > <?php echo $all_years; ?></option>
+        
+        <?php
+        }
+        ?>
+
+      </select>
+    </form>
   </div>
   <div class="card-body">
     <div class="table-responsive">
@@ -31,65 +56,282 @@
           </tr>
         </thead>
         <tbody>
-          <tr>
-            <td>Income Category Type</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-          </tr>
-          <tr>
-            <td>Income Category Type 2</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-          </tr>
+          <?php
+          while($row = mysqli_fetch_array($sql_categories_income)){
+            $category_id = $row['category_id'];
+            $category_name = $row['category_name'];
+          ?>
+
+            <tr>
+              <td><?php echo $category_name; ?></td>
+              
+              <?php
+              
+              for($month = 1; $month<=3; $month++) {
+                $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND invoices.category_id = $category_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+                $row = mysqli_fetch_array($sql_payments);
+                $payment_amount_for_quarter_one = $payment_amount_for_quarter_one + $row['payment_amount_for_month'];              
+              }
+              
+              ?>
+                
+                <td class="text-right">$<?php echo number_format($payment_amount_for_quarter_one,2); ?></td>
+
+              <?php
+              
+              for($month = 4; $month<=6; $month++) {
+                $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND invoices.category_id = $category_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+                $row = mysqli_fetch_array($sql_payments);
+                $payment_amount_for_quarter_two = $payment_amount_for_quarter_two + $row['payment_amount_for_month'];
+              }
+              
+              ?>
+
+                <td class="text-right">$<?php echo number_format($payment_amount_for_quarter_two,2); ?></td>
+
+              <?php
+              
+              for($month = 7; $month<=9; $month++) {
+                $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND invoices.category_id = $category_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+                $row = mysqli_fetch_array($sql_payments);
+                $payment_amount_for_quarter_three = $payment_amount_for_quarter_three + $row['payment_amount_for_month'];
+              }
+              
+              ?>
+
+                <td class="text-right">$<?php echo number_format($payment_amount_for_quarter_three,2); ?></td>
+
+              <?php
+              
+              for($month = 10; $month<=12; $month++) {
+                $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND invoices.category_id = $category_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+                $row = mysqli_fetch_array($sql_payments);
+                $payment_amount_for_quarter_four = $payment_amount_for_quarter_four + $row['payment_amount_for_month'];
+              }
+              
+              $total_payments_for_all_four_quarters = $payment_amount_for_quarter_one + $payment_amount_for_quarter_two + $payment_amount_for_quarter_three + $payment_amount_for_quarter_four;
+
+              ?>
+
+              <td class="text-right">$<?php echo number_format($payment_amount_for_quarter_four,2); ?></td>        
+              
+              <td class="text-right">$<?php echo number_format($total_payments_for_all_four_quarters,2); ?></td>
+            </tr>
+          
+          <?php 
+          
+          $payment_amount_for_quarter_one = 0;
+          $payment_amount_for_quarter_two = 0;
+          $payment_amount_for_quarter_three = 0;
+          $payment_amount_for_quarter_four = 0;
+          $total_payment_for_all_months = 0;
+
+          } 
+          
+          ?>
+          
           <tr>
             <th>Gross Profit</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
+            <?php
+              
+            for($month = 1; $month<=3; $month++) {
+              $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_total_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+              $row = mysqli_fetch_array($sql_payments);
+              $payment_total_amount_for_quarter_one = $payment_total_amount_for_quarter_one + $row['payment_total_amount_for_month'];
+            }
+            
+            ?>  
+            
+              <th class="text-right">$<?php echo number_format($payment_total_amount_for_quarter_one,2); ?></th>
+
+            <?php
+ 
+            for($month = 4; $month<=6; $month++) {
+              $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_total_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+              $row = mysqli_fetch_array($sql_payments);
+              $payment_total_amount_for_quarter_two = $payment_total_amount_for_quarter_two + $row['payment_total_amount_for_month'];
+            }
+            
+            ?>  
+            
+              <th class="text-right">$<?php echo number_format($payment_total_amount_for_quarter_two,2); ?></th>
+
+            <?php
+ 
+            for($month = 7; $month<=9; $month++) {
+              $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_total_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+              $row = mysqli_fetch_array($sql_payments);
+              $payment_total_amount_for_quarter_three = $payment_total_amount_for_quarter_three + $row['payment_total_amount_for_month'];
+            }
+            
+            ?>  
+            
+              <th class="text-right">$<?php echo number_format($payment_total_amount_for_quarter_three,2); ?></th>
+
+            <?php
+ 
+            for($month = 10; $month<=12; $month++) {
+              $sql_payments = mysqli_query($mysqli,"SELECT SUM(payment_amount) AS payment_total_amount_for_month FROM payments, invoices WHERE payments.invoice_id = invoices.invoice_id AND YEAR(payment_date) = $year AND MONTH(payment_date) = $month");
+              $row = mysqli_fetch_array($sql_payments);
+              $payment_total_amount_for_quarter_four = $payment_total_amount_for_quarter_four + $row['payment_total_amount_for_month'];
+            }
+            
+            $total_payments_for_all_four_quarters = $payment_total_amount_for_quarter_one + $payment_total_amount_for_quarter_two + $payment_total_amount_for_quarter_three + $payment_total_amount_for_quarter_four;
+
+            ?>  
+            
+            <th class="text-right">$<?php echo number_format($payment_total_amount_for_quarter_four,2); ?></th>
+
+            <th class="text-right">$<?php echo number_format($total_payments_for_all_four_quarters,2); ?></th>
           </tr>
+         
           <tr>
             <th><br><br>Expenses</th>
             <th colspan="5"></th>
           </tr>
-          <tr>
-            <td>Expense Category Type</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-          </tr>
-          <tr>
-            <td>Expense Category Type 2</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-            <td class="text-right">$0.00</td>
-          </tr>
+          <?php
+          while($row = mysqli_fetch_array($sql_categories_expense)){
+            $category_id = $row['category_id'];
+            $category_name = $row['category_name'];
+          ?>
+
+            <tr>
+              <td><?php echo $category_name; ?></td>
+              
+              <?php
+              
+              for($month = 1; $month<=3; $month++) {
+                $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_amount_for_month FROM expenses WHERE category_id = $category_id AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+                $row = mysqli_fetch_array($sql_expenses);
+                $expense_amount_for_quarter_one = $expense_amount_for_quarter_one + $row['expense_amount_for_month'];              
+              }
+              
+              ?>
+                
+                <td class="text-right">$<?php echo number_format($expense_amount_for_quarter_one,2); ?></td>
+
+              <?php
+              
+              for($month = 4; $month<=6; $month++) {
+                $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_amount_for_month FROM expenses WHERE category_id = $category_id AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+                $row = mysqli_fetch_array($sql_expenses);
+                $expense_amount_for_quarter_two = $expense_amount_for_quarter_two + $row['expense_amount_for_month'];
+              }
+              
+              ?>
+
+                <td class="text-right">$<?php echo number_format($expense_amount_for_quarter_two,2); ?></td>
+
+              <?php
+              
+              for($month = 7; $month<=9; $month++) {
+                $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_amount_for_month FROM expenses WHERE category_id = $category_id AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+                $row = mysqli_fetch_array($sql_expenses);
+                $expense_amount_for_quarter_three = $expense_amount_for_quarter_three + $row['expense_amount_for_month'];
+              }
+              
+              ?>
+
+                <td class="text-right">$<?php echo number_format($expense_amount_for_quarter_three,2); ?></td>
+
+              <?php
+              
+              for($month = 10; $month<=12; $month++) {
+                $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_amount_for_month FROM expenses WHERE category_id = $category_id AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+                $row = mysqli_fetch_array($sql_expenses);
+                $expense_amount_for_quarter_four = $expense_amount_for_quarter_four + $row['expense_amount_for_month'];
+              }
+              
+              $total_expenses_for_all_four_quarters = $expense_amount_for_quarter_one + $expense_amount_for_quarter_two + $expense_amount_for_quarter_three + $expense_amount_for_quarter_four;
+
+              ?>
+
+              <td class="text-right">$<?php echo number_format($expense_amount_for_quarter_four,2); ?></td>        
+              
+              <td class="text-right">$<?php echo number_format($total_expenses_for_all_four_quarters,2); ?></td>
+            </tr>
+          
+          <?php 
+          
+          $expense_amount_for_quarter_one = 0;
+          $expense_amount_for_quarter_two = 0;
+          $expense_amount_for_quarter_three = 0;
+          $expense_amount_for_quarter_four = 0;
+          $total_expense_for_all_months = 0;
+
+          } 
+          
+          ?>
+          
           <tr>
             <th>Total Expenses<br><br><br></th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
+            <?php
+              
+            for($month = 1; $month<=3; $month++) {
+              $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_total_amount_for_month FROM expenses WHERE category_id > 0 AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+              $row = mysqli_fetch_array($sql_expenses);
+              $expense_total_amount_for_quarter_one = $expense_total_amount_for_quarter_one + $row['expense_total_amount_for_month'];
+            }
+            
+            ?>  
+            
+              <th class="text-right">$<?php echo number_format($expense_total_amount_for_quarter_one,2); ?></th>
+
+            <?php
+ 
+            for($month = 4; $month<=6; $month++) {
+              $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_total_amount_for_month FROM expenses WHERE category_id > 0 AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+              $row = mysqli_fetch_array($sql_expenses);
+              $expense_total_amount_for_quarter_two = $expense_total_amount_for_quarter_two + $row['expense_total_amount_for_month'];
+            }
+            
+            ?>  
+            
+              <th class="text-right">$<?php echo number_format($expense_total_amount_for_quarter_two,2); ?></th>
+
+            <?php
+ 
+            for($month = 7; $month<=9; $month++) {
+              $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_total_amount_for_month FROM expenses WHERE category_id > 0 AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+              $row = mysqli_fetch_array($sql_expenses);
+              $expense_total_amount_for_quarter_three = $expense_total_amount_for_quarter_three + $row['expense_total_amount_for_month'];
+            }
+            
+            ?>  
+            
+              <th class="text-right">$<?php echo number_format($expense_total_amount_for_quarter_three,2); ?></th>
+
+            <?php
+ 
+            for($month = 10; $month<=12; $month++) {
+              $sql_expenses = mysqli_query($mysqli,"SELECT SUM(expense_amount) AS expense_total_amount_for_month FROM expenses WHERE category_id > 0 AND YEAR(expense_date) = $year AND MONTH(expense_date) = $month");
+              $row = mysqli_fetch_array($sql_expenses);
+              $expense_total_amount_for_quarter_four = $expense_total_amount_for_quarter_four + $row['expense_total_amount_for_month'];
+            }
+            
+            $total_expenses_for_all_four_quarters = $expense_total_amount_for_quarter_one + $expense_total_amount_for_quarter_two + $expense_total_amount_for_quarter_three + $expense_total_amount_for_quarter_four;
+
+            ?>  
+            
+            <th class="text-right">$<?php echo number_format($expense_total_amount_for_quarter_four,2); ?></th>
+
+            <th class="text-right">$<?php echo number_format($total_expenses_for_all_four_quarters,2); ?></th>
           </tr>
           <tr>
+            <?php
+              $net_profit_quarter_one = $payment_total_amount_for_quarter_one - $expense_total_amount_for_quarter_one;
+              $net_profit_quarter_two = $payment_total_amount_for_quarter_two - $expense_total_amount_for_quarter_two;
+              $net_profit_quarter_three = $payment_total_amount_for_quarter_three - $expense_total_amount_for_quarter_three;
+              $net_profit_quarter_four = $payment_total_amount_for_quarter_four - $expense_total_amount_for_quarter_four;
+              $net_profit_year = $total_payments_for_all_four_quarters - $total_expenses_for_all_four_quarters;
+            ?>
+
             <th>Net Profit</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
-            <th class="text-right">$0.00</th>
+            <th class="text-right">$<?php echo number_format($net_profit_quarter_one,2); ?></th>
+            <th class="text-right">$<?php echo number_format($net_profit_quarter_two,2); ?></th>
+            <th class="text-right">$<?php echo number_format($net_profit_quarter_three,2); ?></th>
+            <th class="text-right">$<?php echo number_format($net_profit_quarter_four,2); ?></th>
+            <th class="text-right">$<?php echo number_format($net_profit_year,2); ?></th>
           </tr>
         </tbody>
       </table>