LedgerBeam

Every business that bills clients needs to turn work into a clean, professional invoice without wrestling a spreadsheet. Freelancers, agencies, clinics and studios all want the same thing: type the work, set a rate, see the total, and send. Invoicing software is the commerce backbone that keeps cash flowing.

LedgerBeam is a two-pane invoice builder: an editor on the left, a styled invoice preview on the right that updates as you type. You can add and remove line items, set quantity and rate per row, apply a tax percentage and a flat discount, fill in client and due-date fields, mark the invoice paid, and send it. Totals recompute instantly and the status badge flips between Unpaid and Paid.

All invoice state lives in a plain JavaScript array of line items plus a few field values. Edits are captured with delegated event listeners, the per-row amount and the subtotal/tax/discount/total are recomputed, and the DOM preview is patched live without losing input focus. Dates are formatted client-side and actions surface a toast confirmation. No libraries, no build step, no server.

This is a functional prototype that demonstrates the invoicing category — it is a capability demo, not a client engagement. Romanov Solutions builds, clones, customizes and integrates production invoicing systems fully custom-fit to your brand and workflow: recurring billing, multi-currency, tax tables, PDF export and payment-processor hookups. Lease it, try it free, buy the code outright, or have us build it new.