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 $tax_group
23 function get_tax_free_price_for_item($stock_id, $price, $tax_group, $tax_included, $tax_group_array=null)
25 // if price is zero, then can't be taxed !
29 if ($tax_included==0) return $price;
31 // if array already read, then make a copy and use that
33 $ret_tax_array = $tax_group_array;
35 $ret_tax_array = get_tax_group_items_as_array($tax_group);
37 //print_r($ret_tax_array);
39 $tax_array = get_taxes_for_item($stock_id, $ret_tax_array);
40 // if no exemptions or taxgroup is empty, then no included/excluded taxes
41 if ($tax_array == null)
48 foreach ($tax_array as $taxitem)
50 $tax_multiplier += $taxitem["rate"];
53 return round($price / (1 + ($tax_multiplier / 100)), 2*user_price_dec());
56 // Full price (incl. VAT) for item $stock_id with line price $price,
57 // with tax rates $tax_group_array or applicable group $tax_group
59 function get_full_price_for_item($stock_id, $price, $tax_group, $tax_included, $tax_group_array=null)
61 // if price is zero, then can't be taxed !
65 if ($tax_included==1) return $price;
67 // if array already read, then make a copy and use that
69 $ret_tax_array = $tax_group_array;
71 $ret_tax_array = get_tax_group_items_as_array($tax_group);
73 //print_r($ret_tax_array);
75 $tax_array = get_taxes_for_item($stock_id, $ret_tax_array);
76 // if no exemptions or taxgroup is empty, then no included/excluded taxes
77 if ($tax_array == null)
84 foreach ($tax_array as $taxitem)
86 $tax_multiplier += $taxitem["rate"];
89 return round($price * (1 + ($tax_multiplier / 100)), 2*user_price_dec());
92 //---------------------------------------------------------------------------------
93 // return an array of (tax_type_id, tax_type_name, sales_gl_code, purchasing_gl_code, rate)
95 function get_taxes_for_item($stock_id, $tax_group_items_array)
97 $item_tax_type = get_item_tax_type_for_item($stock_id);
99 // if the item is exempt from all taxes then return 0
100 if ($item_tax_type["exempt"])
103 // get the exemptions for this item tax type
104 $item_tax_type_exemptions_db = get_item_tax_type_exemptions($item_tax_type["id"]);
106 // read them all into an array to minimize db querying
107 $item_tax_type_exemptions = array();
108 while ($item_tax_type_exemp = db_fetch($item_tax_type_exemptions_db))
110 $item_tax_type_exemptions[] = $item_tax_type_exemp["tax_type_id"];
113 $ret_tax_array = array();
115 // if any of the taxes of the tax group are in the exemptions, then skip
116 foreach ($tax_group_items_array as $tax_group_item)
121 // if it's in the exemptions, skip
122 foreach ($item_tax_type_exemptions as $exemption)
124 if (($tax_group_item['tax_type_id'] == $exemption))
133 $index = $tax_group_item['tax_type_id'];
134 $ret_tax_array[$index] = $tax_group_item;
138 return $ret_tax_array;
140 //-----------------------------------------------------------------------------------
141 // return an array of (tax_type_id, tax_type_name, sales_gl_code, purchasing_gl_code, rate, included_in_price, Value)
143 function get_tax_for_items($items, $prices, $shipping_cost, $tax_group, $tax_included=null, $tax_items_array=null, $tax_algorithm = null)
146 $tax_algorithm = get_company_pref('tax_algorithm');
147 // first create and set an array with all the tax types of the tax group
148 if($tax_items_array!=null)
149 $ret_tax_array = $tax_items_array;
151 $ret_tax_array = get_tax_group_items_as_array($tax_group);
153 $dec = user_price_dec();
154 foreach($ret_tax_array as $k=>$t)
155 $ret_tax_array[$k]['Net'] = 0;
157 // loop for all items
158 for ($i = 0; $i < count($items); $i++)
160 $item_taxes = get_taxes_for_item($items[$i], $ret_tax_array);
162 if ($item_taxes != null)
164 foreach ($item_taxes as $item_tax)
166 $index = $item_tax['tax_type_id'];
167 if($tax_included==1) {// 2008-11-26 Joe Hunt Taxes are stored without roundings
168 $nprice = get_tax_free_price_for_item($items[$i], $prices[$i], $tax_group, $tax_included);
169 $ret_tax_array[$index]['Value'] += round2($nprice * $item_tax['rate'] / 100, $dec);
170 $ret_tax_array[$index]['Net'] += $nprice;
172 $ret_tax_array[$index]['Value'] += round2($prices[$i] * $item_tax['rate'] / 100, $dec);
173 $ret_tax_array[$index]['Net'] += $prices[$i];
179 // add the shipping taxes, only if non-zero, and only if tax group taxes shipping
180 if ($shipping_cost != 0)
182 $item_taxes = get_shipping_tax_as_array();
183 if ($item_taxes != null)
185 if ($tax_included == 1)
188 foreach ($item_taxes as $item_tax)
190 $index = $item_tax['tax_type_id'];
191 if(isset($ret_tax_array[$index])) {
192 $tax_rate += $item_tax['rate'];
195 $shipping_net = round2($shipping_cost / (1 + ($tax_rate / 100)), $dec);
197 foreach ($item_taxes as $item_tax)
199 $index = $item_tax['tax_type_id'];
200 if(isset($ret_tax_array[$index])) {
201 if($tax_included==1) {// 2008-11-26 Joe Hunt Taxes are stored without roundings
202 $ret_tax_array[$index]['Value'] += round2($shipping_net * $item_tax['rate'] / 100, $dec);
203 $ret_tax_array[$index]['Net'] += $shipping_net;
205 $ret_tax_array[$index]['Value'] += round2($shipping_cost * $item_tax['rate'] / 100, $dec);
206 $ret_tax_array[$index]['Net'] += $shipping_cost;
213 if ($tax_algorithm == TCA_TOTALS ) {
215 foreach($ret_tax_array as $index => $item_tax) {
216 $ret_tax_array[$index]['Value'] = round2($item_tax['Net'] * $item_tax['rate'] / 100, $dec);
220 return $ret_tax_array;