Sources
- CSGB / Asgari Ücret Tespit Komisyonu (2026 brüt/net)
- GİB gelir vergisi tarifesi 2026
- EPDK mesken elektrik kademeli tarife (yaklaşık)
- BOTAŞ / dağıtım şirketleri doğalgaz (yaklaşık)
- Hazine ve Maliye — kıdem tazminatı tavanı 1. dönem 2026
VAT Calculation
VAT is added to a net base; included tax is extracted by division. Discount order and product rate change the result.
Adding VAT
Multiply the net base by (1 + rate). Tax alone is base × rate. Example: 1,000 at 20% → 200 tax, 1,200 gross.
Choose net-to-gross mode in the VAT calculator; the wrong mode reverses the invoice logic.
FX quotes need a locked FX date before you convert into a TRY VAT base. Write the rate source into the contract to avoid disputes. Feed the calculator only after conversion is fixed.
Extracting VAT
Divide gross by (1 + rate) to recover the base. Multiplying gross by the rate is a common error that overstates tax.
Retail shelf tags are often gross while wholesale offers are net. Comparing them without aligning modes invents false margins. Ask “VAT included?” in writing.
Discount order
Discounts usually reduce the taxable base, but invoice wording controls sequence. Basket deals and line discounts can differ.
Multiple rates
Goods and services may use different statutory rates. Do not force one rate onto every line. ÖTV-affected goods need separate base logic.
Mixed-rate invoices should be extracted line by line. Coupons allocated to specific lines change the tax split. Keep the e-invoice PDF in your checklist.
Withholding special cases
Partial VAT withholding splits reporting duties. A simple add/extract tool may not cover the full case. Seek professional help for filings.
Withholding brackets can depend on sector and amount. Simple VAT tools will not pick those brackets automatically. Confirm returns with an accountant when kuruş differences appear.
Invoice checklist
Confirm gross/net mode, product rate, discount order and line totals. Rounding may differ by a few kuruş. Informational only.
Practical tips
- Never multiply gross by the rate to extract VAT.
- Pick the correct rate per product.
- Check whether discounts hit the base first.
- Do not treat simple tools as withholding engines.
- Follow the e-invoice lines as authority.
FAQ
Multiply gross by the rate?
No. To extract included VAT, divide gross by (1 + rate). Multiplication overstates tax.
One rate for everything?
No. Classification can assign different rates; verify the current schedule.
How do discounts affect VAT?
They usually lower the base and therefore the tax, subject to invoice sequence rules.
Does the tool handle withholding?
Not fully. Withholding cases need specialist checks beyond simple arithmetic.
Is it an official filing?
No. It is an arithmetic helper only.