2 /**********************************************************************
3 Copyright (C) FrontAccounting, LLC.
4 Released under the terms of the GNU General Public License, GPL,
5 as published by the Free Software Foundation, either version 3
6 of the License, or (at your option) any later version.
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
10 See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
11 ***********************************************************************/
12 include_once($path_to_root . "/taxes/db/tax_groups_db.inc");
13 include_once($path_to_root . "/taxes/db/tax_types_db.inc");
14 include_once($path_to_root . "/taxes/db/item_tax_types_db.inc");
16 //---------------------------------------------------------------------------------
18 // returns the price of a given item minus any included taxes
19 // for item $stock_id with line price $price,
20 // with applicable tax rates $tax_group_array or group id $tax_group
22 function get_tax_free_price_for_item($stock_id, $price, $tax_group, $tax_included, $tax_group_array=null)
24 // if price is zero, then can't be taxed !
28 if ($tax_included==0) return $price;
30 // if array already read, then make a copy and use that
32 $ret_tax_array = $tax_group_array;
34 $ret_tax_array = get_tax_group_items_as_array($tax_group);
36 //print_r($ret_tax_array);
38 $tax_array = get_taxes_for_item($stock_id, $ret_tax_array);
39 // if no exemptions or taxgroup is empty, then no included/excluded taxes
40 if ($tax_array == null)
43 // to avoid rounding errors we have to just subtract taxes from tax_included price.
45 foreach ($tax_array as $taxitem)
47 $tax_multiplier += $taxitem["rate"];
51 foreach ($tax_array as $taxitem)
53 $tax += round($price*$taxitem['rate']/(100+$tax_multiplier), user_price_dec());
58 // Full price (incl. VAT) for item $stock_id with line price $price,
59 // with tax rates $tax_group_array or applicable group $tax_group
61 function get_full_price_for_item($stock_id, $price, $tax_group, $tax_included, $tax_group_array=null)
63 // if price is zero, then can't be taxed !
67 if ($tax_included==1) return $price;
69 // if array already read, then make a copy and use that
71 $ret_tax_array = $tax_group_array;
73 $ret_tax_array = get_tax_group_items_as_array($tax_group);
75 //print_r($ret_tax_array);
77 $tax_array = get_taxes_for_item($stock_id, $ret_tax_array);
78 // if no exemptions or taxgroup is empty, then no included/excluded taxes
79 if ($tax_array == null)
86 foreach ($tax_array as $taxitem)
88 $tax_multiplier += $taxitem["rate"];
91 return round($price * (1 + ($tax_multiplier / 100)), user_price_dec());
94 //---------------------------------------------------------------------------------
95 // return an array of (tax_type_id, tax_type_name, sales_gl_code, purchasing_gl_code, rate)
97 function get_taxes_for_item($stock_id, $tax_group_items_array)
99 $item_tax_type = get_item_tax_type_for_item($stock_id);
101 // if the item is exempt from all taxes then return 0
102 if ($item_tax_type["exempt"])
105 // get the exemptions for this item tax type
106 $item_tax_type_exemptions_db = get_item_tax_type_exemptions($item_tax_type["id"]);
108 // read them all into an array to minimize db querying
109 $item_tax_type_exemptions = array();
110 while ($item_tax_type_exemp = db_fetch($item_tax_type_exemptions_db))
112 $item_tax_type_exemptions[] = $item_tax_type_exemp["tax_type_id"];
115 $ret_tax_array = array();
117 // if any of the taxes of the tax group are in the exemptions, then skip
118 foreach ($tax_group_items_array as $tax_group_item)
123 // if it's in the exemptions, skip
124 foreach ($item_tax_type_exemptions as $exemption)
126 if (($tax_group_item['tax_type_id'] == $exemption))
135 $index = $tax_group_item['tax_type_id'];
136 $ret_tax_array[$index] = $tax_group_item;
140 return $ret_tax_array;
142 //-----------------------------------------------------------------------------------
143 // return an array of (tax_type_id, tax_type_name, sales_gl_code, purchasing_gl_code, rate, included_in_price, Value)
145 function get_tax_for_items($items, $prices, $shipping_cost, $tax_group, $tax_included=null, $tax_items_array=null)
147 // first create and set an array with all the tax types of the tax group
148 if($tax_items_array!=null)
149 $ret_tax_array = $tax_items_array;
151 $ret_tax_array = get_tax_group_items_as_array($tax_group);
153 foreach($ret_tax_array as $k=>$t)
154 $ret_tax_array[$k]['Net'] = 0;
156 $dec = user_price_dec();
157 // loop for all items
158 for ($i = 0; $i < count($items); $i++)
160 $item_taxes = get_taxes_for_item($items[$i], $ret_tax_array);
161 if ($item_taxes != null)
164 foreach ($item_taxes as $taxitem)
166 $tax_multiplier += $taxitem['rate'];
168 foreach ($item_taxes as $item_tax)
170 if ($item_tax['rate'] !== null) {
171 $index = $item_tax['tax_type_id'];
172 if ($tax_included == 1) {
173 $ret_tax_array[$index]['Value'] += round2($prices[$i]*$item_tax['rate']/(100+$tax_multiplier), $dec);
174 $ret_tax_array[$index]['Net'] += round2($prices[$i]*100/(100+$tax_multiplier), $dec);
176 $ret_tax_array[$index]['Value'] += ($prices[$i] * $item_tax['rate'] / 100);
177 $ret_tax_array[$index]['Net'] += $prices[$i];
184 // add the shipping taxes, only if non-zero, and only if tax group taxes shipping
185 if ($shipping_cost != 0)
187 $item_taxes = get_shipping_tax_as_array();
188 if ($item_taxes != null)
190 if ($tax_included == 1)
193 foreach ($item_taxes as $item_tax)
195 $index = $item_tax['tax_type_id'];
196 if(isset($ret_tax_array[$index])) {
197 $tax_rate += $item_tax['rate'];
200 $shipping_net = round2($shipping_cost*100/(100+$tax_rate), $dec);
202 foreach ($item_taxes as $item_tax)
204 $index = $item_tax['tax_type_id'];
205 if ($item_tax['rate'] !== null && $ret_tax_array[$index]['rate'] !== null) {
206 if($tax_included==1) {
207 $ret_tax_array[$index]['Value'] += round2($shipping_cost*$item_tax['rate']/(100+$tax_rate), $dec);
208 $ret_tax_array[$index]['Net'] += $shipping_net;
210 $ret_tax_array[$index]['Value'] += ($shipping_cost * $item_tax['rate'] / 100);
211 $ret_tax_array[$index]['Net'] += $shipping_cost;
217 //print_r($ret_tax_array);
219 return $ret_tax_array;