Free schedule of rates templates, by trade

Yes. Every template downloads as Excel or CSV with no account and no email address.

Because the rate is for you and your supplier to agree. The files hold item names and units only, so nothing in them can be read as a market price.

The dates apply to the whole schedule. You enter the date it applies from, and the date it ends if it has one, when you load the file into CostCode, and each invoice is checked against the schedule in force on its date. Settle the dates with the supplier and keep them with the file: the covering email is enough. Agree too whether prices can change during the term (rise and fall) and how much notice the supplier gives, and get any new rates in writing before they reach an invoice.

Not in the file. Delivery and freight, fuel and environmental levies, waiting time, minimum-load and small-order fees and pallet deposits are checked against the charge agreements on the supplier's page in CostCode, not against the schedule, so a charge loaded as a row would check nothing. Agree them at the same time and add each one there when you load the schedule: a flat amount, a percentage of the goods (a fuel levy, say) or a price per unit, with the dates it applies. A charge with nothing agreed stays unverified, never passed.

Build a first draft from the invoices you've already paid, then send it to the supplier to confirm. Until they do, it's your record of what you've paid, not their agreement, and CostCode checks against it without ever quoting it to the supplier.

Yes. It's an ordinary spreadsheet: agree it with your supplier and check their invoices against it by hand. Its columns are named so CostCode's importer maps them on its own if you load it later.