Free tools
Free contract calculators
Work out notice deadlines, automatic renewals, index-linked increases, late-payment interest, bank-guarantee costs, the cost of missed renewals and contract commitments. Each answer comes with its figures and assumptions, and every calculator can be embedded on your own site.
- Free to use
- No sign-up
- Shows every step
- Embeddable on your site
Deadlines and renewals
Know the last day to act before a contract renews or a notice period runs out.
Prices, interest and costs
Work out index-linked increases, late-payment interest, guarantee fees and what a contract commits you to.
- Index increase calculatorThe increase between two months of a price index, with cap and floor.Open the calculator
- Late-payment interest calculatorStatutory interest and compensation on an overdue invoice.Open the calculator
- Bank-guarantee cost calculatorCommission and fees for a bank guarantee, in total and per year.Open the calculator
- Missed-renewal cost calculatorWhat contracts that renew without a decision cost you each year.Open the calculator
- Contract value and commitment calculatorTotal value, yearly value and what is still committed from today.Open the calculator
Contract documents
Get the key terms of a short contract by email, read by AI.
The data behind the calculators
The calculators use published reference data: public holidays for 250 countries, official price indices and statutory interest rates, each with its source.
- Public holidays and business daysHolidays and business days for 250 countries, with calendar downloads.Read more
- Price indices and reference ratesConsumer price indices and reference rates with their latest values.Read more
- Late-payment interest by countryStatutory rates and compensation for six countries.Read more
How to get a reliable answer
Step 1
Take the figures from the contract
Use the dates, periods and amounts the signed contract states, not a summary or an old spreadsheet.
Step 2
Check the working
Every result shows its steps, its assumptions and the data it used, so you can see where each number comes from.
Step 3
Keep it on the contract
In Pactinel the same calculation runs for every contract you hold and reminds the owner in time.
General information, not legal advice. Check the result against your contract and the law that applies to it.
Guides behind the numbers
What the clauses mean, how the deadlines are counted and what to watch for.
- Notice clauses and deemed receipt explainedWhat a notices clause requires, how deemed-receipt rules decide whether a notice arrived in time, and the default rules in the US, UK, Germany and Turkey.
- Auto-renewal clauses: how they work and how to exitHow automatic renewal and evergreen clauses work, how to find the last day to give notice, and the rules for business and consumer contracts in four countries.
- CPI escalation clauses: how to calculate an increaseHow CPI, HICP and RPI escalation clauses work, how to calculate an increase with caps and floors, which series to name, and limits in Germany and Turkey.
- Bank guarantees and bonds: tracking after signatureHow to track performance, advance-payment and warranty guarantees, standby letters of credit and bonds from issue to return, with expiry and call rules.
- How to terminate a contract without a breachEnd a contract safely: non-renewal, termination for convenience or cause, cure periods, notice formalities and the main differences in the US, UK, DE and TR.
- Contract management after signature: a practical guideWhat contract management covers after signature: lifecycle stages, ownership, a repository, a deadline calendar, effective terms and the country rules that matter.
Frequently asked questions
Are the calculators really free?
Yes. Every calculator is free and needs no account. The contract summary only asks for an email address, because the result is sent by email.
Can I put a calculator on my own website?
Yes, every calculator except the contract summary. Copy the embed code from the calculator's page; it runs in a frame and links back to the source.
How reliable are the results?
They follow the figures you enter and the published reference data, and show every step. They are general information, not legal advice: check them against your contract and the law that applies to it.
Which countries are covered?
Public holidays and business days cover 250 countries. Statutory late-payment interest covers Germany, France, Spain, the Netherlands, Ireland and the United Kingdom. The index calculator uses official national and European series.
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