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Overlap Days Between Two Periods: Splitting an Invoice Period Across Months

Lesson 5 of 817 minLab

This lesson is part of the course

In this lesson

You split five fictional service invoices across January to April: count each invoice's days, find the overlap of every invoice with every month in one copyable formula, turn the overlap into amounts and see which month carries the most.

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Lessons in this course

  1. Daily Rates Three Ways: Actual Days, a 30-Day Basis & Annual ÷ 365Lab14 min Locked
  2. Partial First and Last Months: Days Used, Days in the Month & the Prorated ChargeLab15 min Locked
  3. Joiners and Leavers: Calendar-Day vs Working-Day Proration of a Monthly SalaryLab16 min Locked
  4. Mid-Cycle Plan Changes: Credit for the Old Plan, Charge for the New One & the Net AmountLab15 min Locked
  5. Overlap Days Between Two Periods: Splitting an Invoice Period Across MonthsLab17 min Locked
  6. Spreading Annual Amounts: a Licence Across Months and Fiscal YearsLab16 min Locked
  7. Rounding That Adds Up: Rounded Parts vs the Total & Where the Difference GoesLab15 min Locked
  8. Proration Dashboard: Many Contracts, Monthly Totals, Checks & a ChartLab18 min Locked