Excel for Finance Lesson 4: Monthly MIS P&L From a GL Extract

📎 This article includes 1 downloadable practice file ↓

⏱ 2 min read

📘 Excel for Finance Course · Lesson 4 of 8

In this article
  1. Start from a tidy extract
  2. The P&L layout
  3. Analysis rows
  4. Where people go wrong
  5. Practice

Management wants the P&L by the 5th. If you rebuild it by hand every month, a formula-driven layout on top of the GL extract will give you days back.

Start from a tidy extract

One row per month per ledger head: Month, Head, Type (Income / COGS / Opex / Finance), Amount. If your extract has only ledger names, add a mapping table (Ledger → Type → P&L line) and bring the type in with XLOOKUP.

The P&L layout

Months across (Jul, Aug, Sep, Quarter), lines down:

Revenue:      =SUMIFS(GL[Amount], GL[Month], C$1, GL[Type], "Income")
COGS:         =SUMIFS(GL[Amount], GL[Month], C$1, GL[Type], "COGS")
Gross profit: =C2 - C3
GP %:         =C4 / C2
Opex:         =SUMIFS(GL[Amount], GL[Month], C$1, GL[Type], "Opex")
EBITDA:       =C4 - C6 + SUMIFS(GL[Amount], GL[Month], C$1, GL[Head], "Depreciation")
Finance cost: =SUMIFS(GL[Amount], GL[Month], C$1, GL[Type], "Finance")
PBT:          =C4 - C6 - C8

The mixed reference C$1 (month header) lets one formula copy across all months (see absolute and relative references).

💡 Add a check row: total of all P&L lines must equal the net of the GL extract for each month. If it doesn’t, a new ledger hasn’t been mapped.

Analysis rows

  • Month-on-month change: =D2/C2-1 with conditional formatting for big swings.
  • Expense as % of revenue for each opex head.
  • Largest opex head: =INDEX(SORTBY(heads, totals, -1), 1).

Where people go wrong

Mistake Effect
Copy-pasting numbers into the P&L No audit trail; errors each month
New ledgers not mapped P&L doesn’t tie to the TB
Signs mixed (credits negative in some exports) Revenue shows negative; normalise signs in the extract

More: monthly MIS report complete guide.

Practice

Download the workbook below. Build each figure in the yellow column of the Practice sheet; the Check column turns green when it matches, and the Answers sheet has a working formula for every task.

📎 Practice files for this article

  • 📗
    Practice workbookGL extract for July-September 2026 with head, type and amount.
    ⬇ XLSX · 14 KB

Free to use for learning. Files with macros (.bas) are plain text — import them with Alt+F11 → File → Import File, and always test on a copy.

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