Invoicing that pays into your account, not ours
Raise invoices, take card payments through your own payment gateway, and give every customer a portal to pay in. Quantum Solutions never holds your money — settlement goes straight to your merchant account.
Free plan available. 14-day Pro trial, no card required.
What it does
Everything below is available on every plan, including the free one. Plans differ in scale — how many colleagues and how many customers — not in capability.
Raise and send invoices
Build an invoice from your own catalogue of reusable line items, apply tax and payment terms, and issue it to a customer. Invoice numbers run in one unbroken sequence, assigned at issue rather than at draft, so your records have no gaps to explain.
How to write an invoice →Get paid by card, into your own account
Connect your own payment gateway and card payments settle straight to your merchant account. We never hold your money — no payout schedule, no second layer of fees, and the rates you negotiated with your acquirer are the rates you pay.
How card payments on an invoice work →Credit notes and refunds
Issue full or partial credit notes against an invoice, with tax back-calculated per line at the rate the original line used, so a partial credit reconciles without a manual adjustment. Refund a settled invoice back to the card it was paid with.
What is a credit note? →A portal for your customers
Every customer you invite gets their own account to view invoices, save a payment method and pay — without you chasing them. A returning customer with a saved card settles a later invoice in one click.
A playbook for late payments →Multi-currency, multi-market
Price and settle in whichever currencies your gateway supports, with per-currency credentials where it needs them. A currency your gateway cannot settle is simply not offered at checkout rather than failing at the payment step.
Invoicing in another currency →Your team, with the right access
Invite colleagues as members or admins. Roles decide who can raise an invoice, refund one, or change your gateway configuration — so the person who chases payments does not also need the keys to your payment settings.
What it does not do
Worth knowing before you sign up rather than after.
- You need your own payment gateway to accept cards. If you do not have one, that is an application to an acquirer, not a checkbox.
- It does not do your bookkeeping or file your taxes. It issues invoices and collects payment.
- Reminders are sent on a schedule; nobody chases on your behalf beyond that.
Frequently asked questions
- What is Quantum Solutions Invoicing?
- It is invoicing software for small businesses and teams. You raise invoices from a reusable catalogue of line items, send them to your customers, take card payments through your own payment gateway, and give every customer their own portal to view and pay what they owe. It also handles credit notes and refunds.
- Can I issue credit notes and refunds?
- Yes. You can issue full or partial credit notes against an invoice, with tax back-calculated per line at the rate the original line used, and refund a settled invoice back to the payment method it was paid with.
- Whose payment account does the money go into?
- Yours. You connect your own payment gateway and card payments settle directly into your own merchant account under your own acquiring agreement. We never hold your funds, so there is no payout schedule to wait on and no second layer of fees between your customer and you.
- Can I invoice in multiple currencies?
- Yes, in whichever currencies your own payment gateway supports, with per-currency credentials where your gateway needs them. If your gateway cannot settle a currency, checkout for that currency is not offered rather than failing at the payment step.
- Which cards can my customers pay with?
- Whichever card networks your own gateway and acquirer support, which you choose per store. Because the payment runs through your gateway rather than ours, the accepted networks and the rates are the ones in your own acquiring agreement.
- Do my customers get their own account?
- Yes. Every customer you invite gets a portal where they can see their invoices, save a payment method and pay. A returning customer with a saved card pays a later invoice in one click, which is the single biggest factor in how quickly invoices get settled.
- Can I give colleagues access?
- Yes. You invite colleagues as members or admins, and their role decides what they can do — who can raise an invoice, who can refund one, and who can change your payment gateway configuration. How many colleagues you can invite depends on your plan.
- Is there a free plan?
- Yes, and it is a real plan rather than a time-limited trial. The free plan includes invoicing, card payments through your own gateway, credit notes, refunds and the customer portal. What it limits is scale: how many colleagues and how many customers you can have.
Send your first invoice today
Create an account, connect your gateway and invoice a customer — all in one sitting.
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