Invoicing software for freelancers and SMBs

Classic invoicing software creates outgoing invoices, manages customers and products, and stores PDFs. Many products also cover quotes, delivery notes, credit notes, and payment reminders. The shared idea is simple: one place for number ranges, letterhead, and the path from quote to invoice, so you do not rebuild the same lines in a spreadsheet every month.

Extended tools pull in incoming receipts, bank matching, and reports. At that point the line to an accounting product blurs. What still separates a lean invoicing program from a full ERP is usually scope: documents and open items first, versus one shared master-data base for service, inventory, portals, and APIs later.

For German freelancers and SMBs the checklist is practical. Can you set a sequential number range? Are VAT and small-business treatment under § 19 UStG available without workarounds? Can the tax advisor take an export without retyping? Is a structured e-invoice available when B2B rules require it? Layout alone is not enough if those pieces are missing.

GoBD-compliant archiving, traceable number ranges, correct VAT, and stepwise B2B e-invoicing are the recurring topics. A plain PDF without structured data is an 'other invoice' under the current reading of § 14 UStG, not an e-invoice. During the transition, paper and consented other formats remain possible for many issuers, but receiving structured invoices has already been required for domestic businesses since 2025.

ZUGFeRD embeds machine-readable EN 16931 data in a PDF. Recipients who still open PDFs can read the human layout; systems that parse XML get the structured payload. Jupiter ERP writes ZUGFeRD 2.x (EN 16931 profile) into the invoice PDF when e-invoicing is on.

DATEV export or a ZIP package for the tax advisor should work without manual rework. Ask your advisor which export they expect before you commit to a tool. Software does not replace advice on your case. Chambers of commerce summaries of mandatory invoice fields (see the IHK overview in the sources) are orientation, not a substitute for the statute text.

Solopreneurs with a few invoices per month often get by with lean invoicing software. If your week is quotes, invoices, and a monthly handoff to the advisor, a focused product is usually enough. Trades, agencies, and retailers with field service, stock, teams, or customer portals often need more: one contact and one product master feeding documents, jobs, and reports without CSV gymnastics.

Jupiter ERP is modular. You can start with documents and accounting, then enable service, inventory, banking depth, or AI where your plan includes them. That path matters if you expect growth but do not want a second migration in two years. It is not a claim that every founder needs the full suite on day one.

Compare total cost honestly: Free or trial limits, paid plan features, and what you still do in spreadsheets. A cheap tool that forces double entry can cost more time than a slightly broader plan. Conversely, buying ERP modules you never open is waste. Match the first process you must fix, then expand.

New accounts start with a 14-day trial of the full product, with no credit card and no automatic charge. During the trial the documented limits include 25 documents and 10 contacts. After the trial, if you do not choose a paid plan, Free stays at €0: 1 user, 10 contacts, 5 documents per month (invoices only), 100 MB storage, plus text templates, tasks, and time tracking. Quotes start at Basic. The cash-basis profit statement and DATEV export start at Business. Dunning starts at Enterprise.

Setup turns e-invoicing on by default. The PDF then contains ZUGFeRD 2.x with the EN 16931 profile, including on Free. You can read received structured files in the public e-invoice viewer without an account. Filing those files as expense receipts in the panel starts at Business. That split is intentional: viewing a file is free; bookkeeping depth is a paid module.

Small businesses choose the § 19 UStG treatment in first steps. New lines can start at 0% VAT with the exemption note on the invoice. Whether the exemption fits your turnover and situation is a question for your tax advisor. The product applies the setting you choose; it does not decide eligibility.

Start with your monthly volume and who touches the data. One person writing five invoices needs different guarantees than a team that shares contacts and locks periods. Then check German specifics: number ranges, VAT treatments, e-invoice format, and advisor export. Only after that compare templates, logos, and mobile apps.

Ask vendors three direct questions. Is the e-invoice ZUGFeRD in a PDF, XRechnung XML, or both? What exactly remains after the trial on the free tier? Where do DATEV, period lock, and dunning sit in the price ladder? Vague 'includes e-invoicing' claims hide those differences.

Finally, run one real invoice end to end: company data, customer, line, PDF preview, send or download, and open the file in an e-invoice viewer if structure is claimed. That single dry run reveals more than a marketing matrix. Keep this page as a checklist, and confirm statute and ministry FAQ updates against the linked sources when rules change.