Coworking Invoicing App: Memberships, Room Overage and Extras on One Bill

Mythex builds an invoicing app for a coworking space: one monthly invoice per member or company with the membership fee, extra meeting room hours, printing and other extras, prorated for mid-month starts and plan changes. Private office deposits are tracked separately, invoices download as PDFs, and an unpaid list shows what is overdue.

Who it's for

Coworking operators who bill from a spreadsheet or a general invoicing tool and add room overage and printing by hand at month end, or forget to. It suits spaces with company accounts, where several members roll up into one invoice for an office manager.

What you can build

A company invoice: three dedicated desks, 6 extra room hours, printing
A hot desk member who started on the 12th, billed for the rest of the month
A plan upgrade mid-month, with the difference prorated
A two-month deposit on a private office, held until the term ends
Guest day passes added to the host company's invoice
An overdue list with what is owed and since when

What coworking billing must handle

Membership is the easy part. The money that leaks is in the extras: room hours beyond the plan allowance, printing, lockers, mail handling, guest passes. Members also join and leave mid-month and change plans. Companies want one invoice for the whole team with their purchase details on it. Deposits are not income and should not appear as such. Describe each of these and Mythex builds lines, rules and statuses for them.

Recurring membership lines per member or company
Usage lines read from bookings and logged extras
Proration for starts, ends and plan changes
Deposits recorded and returned separately
Your tax rate per line and totals in your currency

One invoice, not five small ones

Put extras on the same monthly invoice as membership. Members prefer one clear bill, and separate small charges are easy to overlook and slow to collect. If your meeting room bookings are also in Mythex, the invoice can read extra hours straight from the bookings table, so nobody counts calendar entries at month end.

Mistakes to avoid

Do not issue invoices without a numbering sequence you control; ask for one from the start. Do not overwrite a sent invoice when something changes; issue a credit note. And do not treat deposits as revenue in your dashboard, or a month with two new offices will look far better than it was.

What to put in first

Your plans and prices, the extras you charge for and their rates, your tax rate and payment terms, and members and companies imported from CSV. Generate one month's invoices in the preview and compare them with what you would have sent by hand before switching over.

A prompt to start from

Build a monthly invoicing app for a coworking space. Members belong to companies and have a plan with a monthly fee and included meeting room hours. Each month generate one invoice per company with membership, extra room hours, printing and guest passes, prorated for mid-month starts and plan changes, with our tax rate. Track private office deposits separately, produce numbered PDF invoices, and show paid, unpaid and overdue lists.

Questions

Can it produce a PDF?

Yes. Ask for a printable invoice and Mythex builds a PDF layout with your details, logo and numbering that you can download or attach to an email.

Does it handle tax?

Say which tax applies and at what rate, and it is calculated per line and shown in the total. If you bill in more than one currency, say that too.

Can it prorate mid-month starts?

Yes. Describe how you prorate, for example by day, and Mythex applies it to new members, leavers and plan changes.

Can members pay online?

Yes, once you connect a payment provider account of your own by asking in chat. Invoices can then include a pay link, and paid status updates on payment.

Do I need to know how to code?

No. You describe your plans and extras and Mythex builds the app with a live preview. You change it by chatting.

How much does it cost?

The Free plan needs no credit card and includes daily credits and publishing. Pro is $25/month and adds code editing, export, GitHub, custom domains and credit top-ups.

Templates to start from

Fintech Payments Site Template — Tiered pricing, blog, animations
AI Trip Planner Template — Chat itineraries with billing-ready UI
Invoice Generator Template — Canvas invoicing with PDF export
Cloud Storage SaaS Template — Marketing site, billing UI, and 2FA
Subscription News Site Template — Paywall-ready editorial grid
Trade Publication Template — Research reports, jobs, memberships