Every supplier, courier and ad invoice, in one place.

Stock from suppliers, courier bills, packaging, ad spend, marketplace and payment-gateway fees — your costs are scattered across a dozen inboxes. Forward each invoice to SlipStack, or snap a paper slip on WhatsApp, and it files the original to your own Google Drive and tracks your true cost of goods and fees in a live dashboard. VAT worked out for SARS. No spreadsheets to reconcile.

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SlipStack

online

COURIER INVOICE

R 1 540.00

Got it — reading your invoice… 📸

VendorThe Courier Guy

Date11 Jun 2026

TotalR 1 540.00

VAT (15%)R 200.87

Filed & logged in your Sheet

Built for selling online

Know your real margin per sale

Online margins die a death of a thousand fees — stock, shipping, packaging, ads, the marketplace cut. SlipStack captures every cost as the invoice lands, so you always know what a sale actually nets you.

Track cost of goods & fees

Forward supplier, courier and ad invoices by email or snap a slip — SlipStack sorts spend by supplier and category so you see your true landed cost.

Margins at a glance

A live Google Sheet dashboard tallies stock, shipping, packaging, ads and platform fees month by month — the costs that quietly eat your margin.

VAT ready for SARS

Every invoice's VAT is split out and tallied, with the original kept in your Drive — so your input VAT claim is sorted before the return is due.

How it works

Three steps. Nothing to install.

Snap or forward — a slip on WhatsApp, or a supplier invoice straight from your inbox.
SlipStack reads it — vendor, date, total and VAT — and files the original.
Sorted. Added to your cost dashboard and posted to Xero if you use it.

Read the full setup guide → · Guide: claiming VAT back →

Every fee, captured automatically

Forward the invoices and they're filed and totalled as they arrive — so month-end and the VAT return stop being a scramble through a dozen inboxes.

StockShippingPackagingAd spendMarketplace feesGateway feesSoftware

Questions

Good to know

Can SlipStack track my cost of goods and fees?

Yes. Forward your supplier, courier and marketplace invoices to SlipStack by email or snap the slip on WhatsApp, and it sorts your spend by supplier and category in a live Google Sheet dashboard — so you can see what stock, shipping, packaging and platform fees are costing you each month.

Can it handle invoices forwarded from my inbox?

Yes. Most e-commerce costs arrive as email invoices — suppliers, couriers, ad platforms and marketplace fees. Forward them to your private SlipStack email address and they file automatically, alongside any paper slips you snap on WhatsApp.

Do I need accounting software?

No. SlipStack keeps a live cost dashboard in a Google Sheet you own, so you get a full picture of your store's spending with no accounting system at all. If you use Xero or QuickBooks, SlipStack posts the entry there too. More on running without software →

Is VAT worked out for SARS?

Yes. SlipStack is built for South African receipts and splits out the VAT on every invoice and slip, keeping a running total of your claimable input VAT, ready for your VAT return.