diff --git a/app/code/community/Svea/Checkout/Block/Adminhtml/Queue.php b/app/code/community/Svea/Checkout/Block/Adminhtml/Queue.php
index 003d48d..02e3fee 100644
--- a/app/code/community/Svea/Checkout/Block/Adminhtml/Queue.php
+++ b/app/code/community/Svea/Checkout/Block/Adminhtml/Queue.php
@@ -282,7 +282,7 @@ protected function _processItem($item, $prefix = '')
                 'ArticleNumber'      => $prefix . $item->getSku(),
                 'Name'               => (string)mb_substr($item->getName(), 0, 40),
                 'Quantity'           => (float)round($item->getQty(), 2),
-                'UnitPrice'          => (float)$item->getPriceInclTax(),
+                'UnitPrice'          => (float)round($item->getPriceInclTax(), 2),
                 'VatPercent'         => (int)round($item->getTaxPercent()),
                 'DiscountPercent'    => (int)0,
                 'Unit'               => (null),
@@ -293,7 +293,7 @@ protected function _processItem($item, $prefix = '')
                     'ArticleNumber'      => (sprintf('discount-%s', $prefix . $item->getId())),
                     'Name'               => (string)mb_substr($item->getName(), 0, 40),
                     'Quantity'           => 1,
-                    'UnitPrice'          => $item->getDiscountAmount() * -1,
+                    'UnitPrice'          => round($item->getDiscountAmount() * -1,2),
                     'VatPercent'         => (int)round($item->getTaxPercent()),
                     'DiscountPercent'    => (int)0,
                     'Unit'               => (null),
@@ -388,7 +388,7 @@ protected function _addShipping($quote)
             'ArticleNumber'   => '',
             'Name'            => (string)$shippingTitle,
             'Quantity'        => 1,
-            'UnitPrice'       => (float)$shipping->getShippingInclTax(),
+            'UnitPrice'       => (float)round($shipping->getShippingInclTax(), 2),
             'VatPercent'      => $vatPercent,
             'DiscountPercent' => '',
         ]);
diff --git a/app/code/community/Svea/Checkout/Model/Checkout/Api/BuildOrder.php b/app/code/community/Svea/Checkout/Model/Checkout/Api/BuildOrder.php
index 534e2cd..6334d88 100644
--- a/app/code/community/Svea/Checkout/Model/Checkout/Api/BuildOrder.php
+++ b/app/code/community/Svea/Checkout/Model/Checkout/Api/BuildOrder.php
@@ -350,7 +350,7 @@ protected function _processItem($item, $prefix = '', $multiply = 1)
 
             $qty = $item->getQty() * $multiply;
             $orderRowItem = WebPayItem::orderRow()
-                ->setAmountIncVat((float)$item->getPriceInclTax())
+                ->setAmountIncVat((float)round($item->getPriceInclTax(),2))
                 ->setVatPercent((int)round($item->getTaxPercent()))
                 ->setQuantity((float)round($qty, 2))
                 ->setArticleNumber($prefix . $item->getSku())
@@ -362,7 +362,7 @@ protected function _processItem($item, $prefix = '', $multiply = 1)
                 $itemRowDiscount = WebPayItem::fixedDiscount()
                     ->setName(mb_substr(sprintf('discount-%s', $prefix . $item->getId()), 0, 40))
                     ->setVatPercent((int)round($item->getTaxPercent()))
-                    ->setAmountIncVat((float)$item->getDiscountAmount());
+                    ->setAmountIncVat((float)round($item->getDiscountAmount(),2));
 
                 $sveaOrder->addDiscount($itemRowDiscount);
             }
@@ -482,7 +482,7 @@ protected function _addShipping($quote, $sveaOrder, $noSave)
         $shippingFee = WebPayItem::shippingFee()
             ->setName((string)$shippingTitle)
             ->setVatPercent((int)$vatPercent)
-            ->setAmountIncVat((float)$shippingPrice);
+            ->setAmountIncVat((float)round($shippingPrice,2));
 
         $sveaOrder->addFee($shippingFee);
 
diff --git a/app/code/community/Svea/Checkout/Model/Payment/Api/Invoice.php b/app/code/community/Svea/Checkout/Model/Payment/Api/Invoice.php
index 104b28b..98da322 100644
--- a/app/code/community/Svea/Checkout/Model/Payment/Api/Invoice.php
+++ b/app/code/community/Svea/Checkout/Model/Payment/Api/Invoice.php
@@ -166,14 +166,14 @@ protected function _adjustQty(
             $partialActionRow = WebPayItem::numberedOrderRow()
                 ->setRowNumber($key)
                 ->setArticleNumber($referenceNumber . '-' . $item['Name'])
-                ->setAmountIncVat((float)$item['newDiscount']*-1)
+                ->setAmountIncVat((float)round($item['newDiscount']*-1, 2))
                 ->setVatPercent((int)$item['VatPercent'])
                 ->setQuantity($item['Quantity']);
 
             $restOfRowQty = WebPayItem::orderRow()
                 ->setArticleNumber($item['ArticleNumber'])
                 ->setName($item['Name'])
-                ->setAmountIncVat((float)$rest)
+                ->setAmountIncVat((float)round($rest, 2))
                 ->setVatPercent((int)$item['VatPercent'])
                 ->setQuantity((int)$item['Quantity']);
 
@@ -215,14 +215,14 @@ protected function _adjustQty(
             $partialActionRow = WebPayItem::numberedOrderRow()
                 ->setRowNumber($key)
                 ->setArticleNumber($referenceNumber .'-'. $item['ArticleNumber'])
-                ->setAmountIncVat((float) $item['UnitPrice'])
+                ->setAmountIncVat((float)round($item['UnitPrice'], 2))
                 ->setVatPercent((int) $item['VatPercent'])
                 ->setQuantity($adjustQty);
 
             $restOfRowQty     = WebPayItem::orderRow()
                 ->setArticleNumber($item['ArticleNumber'])
                 ->setName($item['Name'])
-                ->setAmountIncVat((float)$item['UnitPrice'])
+                ->setAmountIncVat((float)round($item['UnitPrice'],2))
                 ->setVatPercent((int)$item['VatPercent'])
                 ->setQuantity((int)$rest);
 
@@ -299,7 +299,7 @@ public function refund($creditMemo)
                 WebPayAdmin::creditAmount($sveaConfig)
                     ->setCheckoutOrderId($sveaOrderId)
                     ->setDeliveryId($deliveryKey)
-                    ->setAmountIncVat((float)$refundAmount)
+                    ->setAmountIncVat((float)round($refundAmount,2))
                     ->creditCheckoutAmount()
                     ->doRequest();
                 $sveaOrder = $this->_getCheckoutOrder($order);
@@ -318,7 +318,7 @@ public function refund($creditMemo)
                     WebPayAdmin::creditAmount($sveaConfig)
                         ->setCheckoutOrderId($sveaOrderId)
                         ->setDeliveryId($deliveryKey)
-                        ->setAmountIncVat((float)$refundAmount)
+                        ->setAmountIncVat((float)round($refundAmount,2))
                         ->creditCheckoutAmount()
                         ->doRequest();
 
@@ -585,7 +585,7 @@ protected function _getActionRows(
                     $chosenItems[$key]               = $row;
                     $qty                             = $items[$itemKey]['qty'];
                     $chosenItems[$key]['action_qty'] = (float)$qty;
-                    $chosenItems[$key]['newDiscount'] = (float)$items[$itemKey]['newDiscount'];
+                    $chosenItems[$key]['newDiscount'] = (float)round($items[$itemKey]['newDiscount'],2);
                 }
             } else {
                 $itemKey = array_search($row['Name'], array_column($items, 'sku'));
@@ -593,7 +593,7 @@ protected function _getActionRows(
                     $chosenItems[$key]               = $row;
                     $qty                             = $items[$itemKey]['qty'];
                     $chosenItems[$key]['action_qty'] = (float)$qty;
-                    $chosenItems[$key]['newDiscount'] = (float)$items[$itemKey]['newDiscount'];
+                    $chosenItems[$key]['newDiscount'] = (float)round($items[$itemKey]['newDiscount'],2);
                 }
             }
 
diff --git a/app/code/community/Svea/Checkout/Model/Payment/Invoice.php b/app/code/community/Svea/Checkout/Model/Payment/Invoice.php
index b0f2a41..fab57cd 100644
--- a/app/code/community/Svea/Checkout/Model/Payment/Invoice.php
+++ b/app/code/community/Svea/Checkout/Model/Payment/Invoice.php
@@ -268,7 +268,7 @@ protected function _processItem($item, $prefix = '')
             }
 
             $orderRowItem = WebPayItem::orderRow()
-                ->setAmountIncVat((float)$item->getPriceInclTax())
+                ->setAmountIncVat((float)round($item->getPriceInclTax()),2)
                 ->setVatPercent((int)round($item->getTaxPercent()))
                 ->setQuantity((float)round($item->getQty(), 2))
                 ->setArticleNumber($prefix . $item->getSku())
@@ -280,7 +280,7 @@ protected function _processItem($item, $prefix = '')
                 $itemRowDiscount = WebPayItem::fixedDiscount()
                     ->setName(mb_substr(sprintf('discount-%s', $prefix . $item->getId()), 0, 40))
                     ->setVatPercent((int)round($item->getTaxPercent()))
-                    ->setAmountExVat((float)$item->getDiscountAmount());
+                    ->setAmountExVat((float)round($item->getDiscountAmount(),2));
 
                 $sveaOrder->addDiscount($itemRowDiscount);
             }