A fiscal register with no internet: how it works when the connection drops
If the internet drops, do sales stop? With an L-PFR they don’t have to. Here’s how the register works offline, how receipts sync later, and how long you can stay offline.
Every market stall or poorly-signposted basement shop’s biggest fear: the internet drops mid-rush. Does the register stop, do you lose customers? If you use an L-PFR, the answer is no. The register keeps working and reports to the tax office as soon as the connection returns.
How it works offline
The L-PFR (local processor) signs and stores receipts on the device itself, using the security element. The customer gets a fully valid fiscal receipt with a QR code even with no internet — because fiscalization happens locally, not on some distant server.
Syncing when the connection returns
Stored receipts are sent to the Tax Administration automatically as soon as the device reconnects. But you can’t stay offline forever: there’s a deadline and limited storage on the security element, so you need to connect periodically to forward the accumulated receipts. In practice, having internet from time to time is enough.
Who this is critical for
Markets and stalls, vans and food trucks, villages and low-signal premises, and anyone whose internet tends to „glitch" at peak time. For them, offline operation is the difference between uninterrupted sales and a stalled queue.
Tezga eKasa keeps selling when the connection drops — receipts are stored and sent automatically once you’re back online. The rush doesn’t stop because of the router.
Key takeaways
- The L-PFR signs and stores receipts locally — it works without internet
- Receipts sync to the tax office automatically once the connection returns
- You can’t stay offline too long — a periodic connection is required
Frequently asked questions
Yes — the L-PFR fiscalizes it locally, with a QR code. The only difference is that the data reaches the tax office a little later.
There’s a prescribed deadline and limited space on the security element. It’s safest to connect regularly so accumulated receipts are forwarded in time.
What you get with Tezga eKasa
- Offline operation — sales don’t stop
- Receipts stored locally and sent when the connection returns
- A valid QR even without internet
- A warning before storage space runs out
Read more
e-Invoicing in Serbia 2026: who must comply, deadlines, and how → The KPO book for flat-rate entrepreneurs: what it is, the 6M limit, how to keep it → Fiscalization for freelancers and service businesses: what you actually need →Try Tezga eKasa free
Fiscal receipts and e-invoices for service businesses — a register that keeps it simple.