diff --git a/go/svc/invoice/render.go b/go/svc/invoice/render.go
new file mode 100644
index 0000000..47c6c6d
--- /dev/null
+++ b/go/svc/invoice/render.go
@@ -0,0 +1,127 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"html/template"
+	"time"
+
+	wkhtml "github.com/sebastiaanklippert/go-wkhtmltopdf"
+
+	"code.hackerspace.pl/hscloud/go/svc/invoice/templates"
+	pb "code.hackerspace.pl/hscloud/proto/invoice"
+)
+
+var (
+	invTmpl *template.Template
+)
+
+func init() {
+	a, err := templates.Asset("invoice.html")
+	if err != nil {
+		panic(err)
+	}
+	invTmpl = template.Must(template.New("invoice.html").Parse(string(a)))
+}
+
+func renderInvoicePDF(i *pb.Invoice, number string, proforma bool) ([]byte, error) {
+	now := time.Now()
+
+	type item struct {
+		Title     string
+		UnitPrice string
+		Qty       string
+		VATRate   string
+		TotalNet  string
+		Total     string
+	}
+
+	data := struct {
+		InvoiceNumber         string
+		InvoicerBilling       []string
+		InvoicerVAT           string
+		InvoicerCompanyNumber string
+		InvoiceeBilling       []string
+		InvoiceeVAT           string
+		Date                  time.Time
+		DueDate               time.Time
+		IBAN                  string
+		SWIFT                 string
+		Proforma              bool
+		ReverseVAT            bool
+		USCustomer            bool
+		Items                 []item
+		TotalNet              string
+		VATTotal              string
+		Total                 string
+		DeliveryCharge        string
+	}{
+		InvoiceNumber:         number,
+		Date:                  now,
+		DueDate:               now.AddDate(0, 0, int(i.DaysDue)),
+		IBAN:                  i.Iban,
+		SWIFT:                 i.Swift,
+		InvoicerVAT:           i.InvoicerVatId,
+		InvoicerCompanyNumber: i.InvoicerCompanyNumber,
+		InvoiceeVAT:           i.CustomerVatId,
+		Proforma:              proforma,
+		ReverseVAT:            i.ReverseVat,
+		USCustomer:            i.UsCustomer,
+
+		InvoicerBilling: make([]string, len(i.InvoicerBilling)),
+		InvoiceeBilling: make([]string, len(i.CustomerBilling)),
+	}
+
+	unit := "€"
+
+	for d, s := range i.InvoicerBilling {
+		data.InvoicerBilling[d] = s
+	}
+	for d, s := range i.CustomerBilling {
+		data.InvoiceeBilling[d] = s
+	}
+
+	totalNet := 0
+	total := 0
+	for _, i := range i.Item {
+		rowTotalNet := int(i.UnitPrice * i.Count)
+		rowTotal := int(float64(rowTotalNet) * (float64(1) + float64(i.Vat)/100000))
+
+		totalNet += rowTotalNet
+		total += rowTotal
+		data.Items = append(data.Items, item{
+			Title:     i.Title,
+			Qty:       fmt.Sprintf("%d", i.Count),
+			UnitPrice: fmt.Sprintf(unit+"%.2f", float64(i.UnitPrice)/100),
+			VATRate:   fmt.Sprintf("%.2f%%", float64(i.Vat)/1000),
+			TotalNet:  fmt.Sprintf(unit+"%.2f", float64(rowTotalNet)/100),
+			Total:     fmt.Sprintf(unit+"%.2f", float64(rowTotal)/100),
+		})
+	}
+
+	data.TotalNet = fmt.Sprintf(unit+"%.2f", float64(totalNet)/100)
+	data.VATTotal = fmt.Sprintf(unit+"%.2f", float64(total-totalNet)/100)
+	data.Total = fmt.Sprintf(unit+"%.2f", float64(total)/100)
+	data.DeliveryCharge = fmt.Sprintf(unit+"%.2f", float64(0))
+
+	var b bytes.Buffer
+	err := invTmpl.Execute(&b, &data)
+	if err != nil {
+		return []byte{}, err
+	}
+
+	pdfg, err := wkhtml.NewPDFGenerator()
+	if err != nil {
+		return []byte{}, err
+	}
+	pdfg.Dpi.Set(600)
+	pdfg.NoCollate.Set(false)
+	pdfg.PageSize.Set(wkhtml.PageSizeA4)
+
+	pdfg.AddPage(wkhtml.NewPageReader(&b))
+
+	if err := pdfg.Create(); err != nil {
+		return []byte{}, err
+	}
+	return pdfg.Bytes(), nil
+}