Bolta free tools
Calculate, look up, and manage certificates
Calculate VAT, social insurance, net salary, and severance pay from official sources. Check whether a counterparty is active, and confirm that a tax invoice or cash receipt was issued. Extract details from a business registration certificate into a spreadsheet, or check a Korean digital certificate and change its password and format. Everything works without signing in.
01Calculators
- Open
VAT calculator
Calculate Korean VAT from either the supply cost or the total amount.
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Social insurance calculator
Split employee and employer contributions across national pension, health insurance, employment insurance, and industrial accident insurance.
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Net salary calculator
Estimate monthly take-home pay after social insurance and withholding tax.
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Severance pay calculator
Estimate severance pay from the average wage of the last three months and total days of service.
02Lookups and verification
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Business registration status lookup
Check suspension, closure, and tax type from a Korean business registration number.
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Tax invoice verification
Confirm with an approval number that an electronic tax invoice was really issued.
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Cash receipt verification
Confirm with an approval number whether a cash receipt was issued and later canceled.
03Documents and certificates
04How these tools work
Every result comes with its basis and source
Official sources
Based on data from the National Pension Service, the National Health Insurance Service, the National Tax Service, and the Ministry of Employment and Labor.Stated basis
Each tool shows the rates in force, the source, and the date it was last verified.Your inputs
Calculator inputs, certificates, and passwords are never sent to an external server. Lookups and document processing use external services. Each page explains how that tool handles your data.
Cut the repeat work once the calculation is done
Issue a tax invoice, confirm the payment, and track the receivable in one place.