KARL Business Day Calculator

Precise deadline calculation for legal & finance. Business days, legal deadlines, roll conventions & holiday calendars with full audit trace for compliant documentation.

KARL is the precise business day and deadline calculator for legal and financial workflows. Whether contract deadlines, settlement dates, or compliance deadlines - calculate business days reliably and document every step with full audit trace.

For Lawyers, Bankers & Finance Professionals

BUSINESS DAY CALCULATOR (T+N) Add or subtract N business days from a start date - non-business days are automatically skipped

ROLL CONVENTIONS Adjust dates according to common market standards (Following, Preceding, Modified Following, Modified Preceding, Unadjusted)

LEGAL DEADLINE CALCULATION Calculate statutory deadlines according to German law (BGB) with start rule, period (days/weeks/months/years), and optional business day adjustment

COUNT BETWEEN Count business days between two dates - including or excluding boundaries

CALENDAR OVERVIEW Visualize months/years with holiday lists and business/non-business marking per day

AUDIT TRACE WITH PROOF Tabular documentation for each date with business day status, reason, and counter-check for plausibility verification

EXPORT & SHARE Share reports as text, send via email, or copy directly to clipboard Supported Calendars: Germany (all federal states), UK Bank Holidays (England & Wales, Scotland, Northern Ireland), US Federal Holidays, TARGET2 (EU Payments)

KARL doesn't just show you the result - it documents every calculation step. Perfect for contracts, compliance documentation, and when every day counts.