Generate tax rules for Magento

createTaxRules.php

<?php
chdir(dirname(__FILE__));
require_once '../app/Mage.php';
Mage::app();
umask(0);

require_once 'countries.php'; // import lists with all countries

// UK Island shipping rates; http://www.crearegroup-ecommerce.co.uk/blog/magento-advice/shipping-rates-to-the-uk-islands.php

$truncateTables = false;
if($truncateTables) {
    $resource = Mage::getModel('core/resource');
    $db = $resource->getConnection('core/write');
    $db->query('TRUNCATE tax_calculation');
    $db->query('TRUNCATE tax_calculation_rate');
    $db->query('TRUNCATE tax_calculation_rate_title');
    $db->query('TRUNCATE tax_rule');
}  

foreach(array('B2C','B2B') as $natureCustomer) {
  $attributeSets = array(
		'Hardcopy Publications',
		'Elec.copy Publications',
		'Downloads of Publications',
		'Advertising',
		'Merchandise Goods',
	);
    foreach($attributeSets as $tableName) {
    	$rate = 0;
		foreach($world as $country) {
		    $rate = 0;
			if($tableName == 'Hardcopy Publications') {
				// everything 0%
			} elseif($tableName == 'Elec.copy Publications') {
				if($natureCustomer == 'B2B') {
					if($country == 'GB') {
						$rate = 20;
					}
				}
				if($natureCustomer == 'B2C') {
					if(in_array($country,$EU)) {
						$rate = 20;
					}
				}
			} elseif($tableName == 'Downloads of Publications') {
				if($natureCustomer == 'B2B') {
					if($country == 'GB') {
						$rate = 20;
					} elseif($country == 'NL') {
						$rate = 21;	
					}
				} elseif($natureCustomer == 'B2C') {
					if($country == 'GB') {
						$rate = 20;
					} elseif($country == 'NL') {
						$rate = 21;
					} else { 
						if(in_array($country,$EU)) {
							$rate = 21; // rest of the EU
						}
					}
				}
			} elseif($tableName == 'Advertising') {
				if($natureCustomer == 'B2B') {
					if($country == 'GB') {
						$rate = 20;
					} elseif($country == 'NL') {
						$rate = 21;
					}
				} elseif($natureCustomer == 'B2C') {
					if($country == 'GB') {
						$rate = 20;
					} elseif($country == 'NL') {
						$rate = 21;
					} else {
						if(in_array($country,$EU)) {
							$rate = 21; // rest of the EU
						}
					}
				}
			} elseif($tableName == 'Merchandise Goods') {
				if($natureCustomer == 'B2B') {
					if($country == 'GB') {
						$rate = 20;
					}
				} elseif($natureCustomer == 'B2C') {
				    if(in_array($country,$EU)) {
				        $rate = 20;
				    } else {
				        $rate = 0;
				    }
				}
			}
		    $taxCalculationRate = Mage::getModel('tax/calculation_rate');
		    $taxCalculationRate->setTaxCountryId($country);
		    $taxCalculationRate->setTaxRegionId(0);
		    $taxCalculationRate->setTaxPostcode('*');
		    $taxCalculationRate->setCode($country . ' ' . $rate . '%');
		    $taxCalculationRate->setRate($rate);
		    try {
		        $taxCalculationRate->save();
		        echo 'Tax calculation rate for ' . $country . ':' . $rate . ' has been saved' . "\n";
		    } catch(Exception $e) {
		        echo $country.':'.$rate.' '.$e->getMessage()."\n";
		        $taxCalculationRate = Mage::getModel('tax/calculation_rate')->getCollection()->addFieldToFilter('code',$country . ' ' . $rate . '%')->getFirstItem();
		    }
	        $productTaxClassId = Mage::getModel('tax/class')->getCollection()->addFieldToFilter('class_type','PRODUCT')->addFieldToFilter('class_name',$tableName)->getFirstItem()->getId();
	        if(!$productTaxClassId) {
	            echo 'No product tax class ID found.'."\n"; exit;
	        }
	        $customerTaxClassId = Mage::getModel('tax/class')->getCollection()->addFieldToFilter('class_type','CUSTOMER')->addFieldToFilter('class_name',$natureCustomer)->getFirstItem()->getId();
	        if(!$customerTaxClassId) {
	            echo 'No customer tax class ID found.'."\n"; exit;
	        }
	        $taxCalculationRule = Mage::getModel('tax/calculation_rule');
	        $code = $tableName . ' ' . $natureCustomer . ' ' . $country . ' ' . $rate . '%';
	        $taxCalculationRule->setCode($code);
	        try {
	            $taxCalculationRule->save();
	            echo 'Tax calculation rule '.$code.' has been saved.'."\n"; 
	        } catch(Exception $e) {
	            echo $tableName.':'.$natureCustomer.': '.$e->getMessage()."\n";
	            $taxCalculationRule = Mage::getModel('tax/calculation_rule')->getCollection()->addFieldToFilter('code',$code)->getFirstItem();
	        }
	        $taxCalculation = Mage::getModel('tax/calculation');
	        
	        $taxCalculation->setTaxCalculationRateId($taxCalculationRate->getId());
	        $taxCalculation->setTaxCalculationRuleId($taxCalculationRule->getId());
	        $taxCalculation->setCustomerTaxClassId($customerTaxClassId);
	        $taxCalculation->setProductTaxClassId($productTaxClassId);
	        try {
	            $taxCalculation->save();
	        } catch(Exception $e) {
	            echo $e->getMessage()."\n";
	        }
	    }
	}
}