Input VAT Refund (Vorsteuerüberhang) in Germany 2026: Calculation, Timeline and Requirements

Paid more VAT to suppliers in a month than you charged your customers? Then you have a Vorsteuerüberhang (input VAT surplus) — and the Finanzamt owes you money. Sounds easy, but there are strings attached: clean invoices, correct UStVA filings, and patience. Here's how a refund works in Germany, how fast you'll see the money, and the mistakes that block payout.

What is a Vorsteuerüberhang?

A Vorsteuerüberhang occurs when the input VAT (Vorsteuer — VAT you paid on purchases) exceeds the output VAT (Umsatzsteuer — VAT you charged on sales) in a reporting period. The difference is refunded through your VAT advance return (UStVA). Legal basis: §§ 16 and 18 UStG; the input VAT deduction itself is governed by § 15 UStG.

Formula:

Input VAT surplus = Input VAT paid − Output VAT collected

When does a Vorsteuerüberhang typically occur?

• Investment months: Buying a laptop, machinery, or office furniture creates a large block of input VAT in one period.
• Startup phase: Notary, IT, website, marketing — costs ramp before revenue does.
• Exports and reverse charge: Tax-free exports outside the EU or B2B reverse-charge invoices to other EU countries produce no output VAT, but your supplier invoices still carry German VAT you can reclaim.
• Seasonal businesses: Inventory bought in spring, sold in autumn.
• Large project with upfront subcontractor costs: Vorsteuer hits this month; you invoice the customer next quarter.

Important: Businesses using the Kleinunternehmer exemption (§ 19 UStG) can't claim a refund — they don't deduct input VAT in the first place.

Calculation example

In March, a UG buys a server for €6,000 net plus €1,140 input VAT, and spends €500 net plus €95 VAT on software. The same month it invoices consulting work for €3,000 net plus €570 VAT.

• Input VAT: €1,140 + €95 = €1,235
• Output VAT: €570
• Vorsteuerüberhang: €1,235 − €570 = €665 refund from the Finanzamt

How long until the money lands?

The UStVA is due on the 10th of the following month (see VAT deadlines 2026). A Dauerfristverlängerung gives you one extra month — but the special prepayment requirement only applies if you actually owe VAT, not when you're claiming refunds.

Once the Finanzamt processes your return, refunds typically arrive in 3 to 6 weeks. Prerequisite: a SEPA direct debit mandate or a refund bank account on file in ELSTER. Without one, nothing happens — the tax office holds the credit silently.

Large amounts or repeated refunds usually trigger a documentation request from the Finanzamt. That can push payout to 2–3 months. Be ready to submit scanned invoices on demand.

What you need to qualify

Every input VAT claim requires a proper supplier invoice that meets § 14 UStG. The mandatory fields are:

• Full name and address of supplier and customer
• Supplier's Steuernummer or USt-IdNr.
• Invoice date, sequential invoice number, description of goods/services
• Net amount, applicable VAT rate (7 % or 19 %), tax amount, gross total

The expense must be business-related. Mixed-use items (a phone used 60 % for business) can only be deducted proportionally.

Common mistakes that block your refund

• No IBAN on file in ELSTER — Finanzamt won't pay and won't always notify you.
• Receipts instead of invoices above €250 gross — small-amount invoice rules cap out below that threshold.
• Reverse charge mishandled: EU services need to be reported on your UStVA — both as output VAT and reclaimed input VAT in the same line. See EU B2B invoicing.
• Duplicate bookings: Bank import and receipt scan create two entries for the same invoice.

If you later realize you missed input VAT, you can amend the return — see How to correct a German VAT return.

Should you file monthly?

If you regularly run an input VAT surplus (exporter, early-stage company), you can apply for monthly UStVA filing. The cash-flow gain is real — you don't sit on a refund for a quarter. New businesses are required to file monthly during their first two calendar years anyway.

How Norman helps

Norman's AI bookkeeping captures supplier invoices automatically, books input VAT correctly, and flags reverse-charge cases. We submit your UStVA via ELSTER and tell you when a refund is coming. For GmbH/UG, there's a dedicated company tax module. Invoicing and bookkeeping are free; you only pay for tax filing.

Conclusion

An input VAT surplus is the normal VAT mechanism in reverse: when your purchases exceed your sales, the state pays back what you advanced. What matters is a clean trail: proper invoices, an accurate UStVA, IBAN on file. Get those right and the Finanzamt refunds reliably. If you invest heavily or sell abroad, switch to monthly filing — that's working capital sitting in your account instead of in Bonn.