Billing that finally works the way design studios bill

You know the shape of it: chase the deposit, deliver the room, work out what's left owing minus what's already held, retype the item list into an invoice — then draft the "just following up" email. Designer billing has a shape, and generic invoicing tools don't model it. Mortar does: deposits that credit the balance automatically, invoices built straight from procurement, reminders that chase for you, and a portal where clients pay by card or bank transfer.

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Payments that match reality

Not every client pays the way software assumes. Someone wires the money, posts a cheque, hands you cash at install — and your invoicing tool acts like it never happened.

In Mortar you record the payment against the invoice — bank transfer, cheque, or cash, full amount or partial — and the invoice shows exactly what's been paid and what's still outstanding. Mispunched an amount? Edit or void the entry; the invoice reopens automatically if it's no longer covered. Recording an offline payment carries no Mortar transaction fee — fees apply only to online card and bank payments through the portal, and they're published on our pricing page.

And when clients do pay online, the portal only ever charges what's still owed — never the original total. A client who's already paid a deposit or a partial amount can't be double-charged.

How it works: Recording, editing, and voiding payments

Get paid without chasing

The "just following up" email is nobody's favourite part of running a studio — so Mortar sends it for you. Automatic reminders go out before and after the due date, written warm: a nudge from your studio, not a collections notice. They always state what's currently owed, so a client who's part-paid isn't dunned for the full amount.

Turn reminders on studio-wide, or pause them on any single invoice you're handling personally.

How it works: Automatic payment reminders

Card or bank transfer — the client's choice

Invoice emails point clients to their portal, where they can pay by card or by bank transfer (US ACH and AU BECS) through your connected Stripe account — no separate setup. In the common case the payment link doesn't expire, so an invoice opened three weeks late still ends in a payment, not a dead link.

Deposit up front, balance on delivery

That's interior design's standard billing motion, and Mortar models it natively instead of leaving you to track it by hand. Create a deposit invoice as a percentage or a fixed amount. Once it's paid, apply it to the balance invoice — Mortar adds the credit line automatically, with accurate tax handling, so you're not working out tax on a partial credit at 11pm.

A deposit can only be applied once, and voiding the balance invoice releases it to apply again — the edge cases are handled, not hand-waved.

How it works: Deposit and balance invoices

Bill straight from procurement

The items are already in Mortar — sourced, priced, approved, received. Billing them shouldn't mean retyping them. Every item shows its billing status at a glance; select a room's approved items (or everything received) and turn them into an invoice in two clicks. If something you've selected is already on an invoice, Mortar flags it before it can be billed twice.

Unlike generic project-management billing tools, the invoice starts from your procurement state — not from a blank line item.

How it works: Billing straight from procurement

Statements that end the "where are we at?" email

When a client wants the full picture of their account, you shouldn't have to assemble it from three tools. Mortar keeps a per-client account view — invoiced, paid, outstanding, and deposits held, lifetime or for any date range — with a branded PDF statement you can download and share whenever the question comes up. You generate it and send it; it's a studio tool, not a client login.

How it works: Client statements