How long does it take to write a business plan? Measure yours

30 September 2026 · 7 min read

It depends on who the plan is for. A one-page plan to get your own thinking straight can be an evening or two; a plan a lender or investor will read, with a financial model behind it, is a project spread across weeks. Either way, the useful thing is to measure yours as you go, because the plan is usually written alongside everything else, and without a record it is hard to tell whether it is nearly done or quietly eating the month.

Decide which plan you are writing

Before anything else, be clear which of these you need, because the hours differ hugely:

• A plan for yourself. A page or two: the problem, the customer, how you will reach them, what it costs, what it earns. Its job is to expose the weakest assumption.
• A plan for a lender. Lenders care about cash flow, repayments and what you are putting in yourself. The financial section carries most of the weight.
• A plan for investors. Often a deck and a model more than a long document, with the size of the opportunity doing the talking.
• A plan for a grant or program. Their template decides the sections, and their word limits decide how much editing you do.

A plan that “took forever” is often the investor version written by someone who needed the one-page version.

Where the hours go

Whatever the type, the work falls into the same stages:

1. Research: the market, the customers, the alternatives they use today, regulations, supplier prices.
2. The numbers: startup costs, pricing, a sales forecast, a cash flow projection, break-even.
3. Writing: turning the research and the numbers into sections someone else can follow.
4. Review: sending it to an advisor, a partner or a friend who will be blunt, then revising.
5. Formatting: the cover, the tables, the charts, exporting a clean PDF.

The numbers tend to take longer than people expect, because every change to one assumption ripples through the rest of the spreadsheet. Research tends to expand to fill whatever time you allow it. Both are worth watching.

Measuring it on your Mac, without a timer

Punchcard is a Mac menu bar app that notices which app is in front during your day, by name only, and prints a receipt at the closing time you set: the top five apps with the time on each, the rest as MISC, and a day total. You never start or stop anything, and it needs no macOS permissions to work.

For a business plan, the receipt maps neatly onto the stages. The spreadsheet app is the numbers. The word processor is the writing. The browser is research. The mail app is the review rounds. If you switch on “Itemize websites” in Settings, browser time in the supported browsers prints as the sites you used, each on its own line: a government statistics site, an industry association, a supplier’s catalog. Punchcard keeps only the site name, never the full address, search terms or page title. Private windows are never read, and sites under a minute stay on the browser’s own line.

A plan is usually written over weeks, which makes the rolls more useful than any single receipt. The Sunday week roll shows how much of the week went to the spreadsheet and the document, and the month roll shows the whole effort in one place. How much of your day is spent in spreadsheets looks at reading the spreadsheet line in more detail.

Tracking never expires and the CSV export works without a license. The first two printed receipts are free; printing after that is a $9 one-time license.

The honest limits

Punchcard has no projects or tags. If you are running an existing business while writing a plan for the next one, the spreadsheet line holds both: this month’s accounts and next year’s forecast. Two ways to handle it:

• Keep plan work in its own blocks, and jot the start and end time of each on a sticky note or in your calendar. Then look up those blocks in the CSV, which has one row per session with start, end, app and seconds.
• Estimate a share at the end of each day: “about half the spreadsheet time was the plan.” Rough, but far better than nothing.

Some of the most useful plan work happens away from the Mac: calls with potential customers, visits to suppliers, a conversation with an accountant. None of that is on any Mac record. Write those down as you go and add them at the end. Work that happens away from the Mac, and why the record misses it covers how.

What the numbers tell you

When the plan is done, or when you want a progress check halfway through, add it up by stage and look for these patterns:

• Research keeps growing and the numbers have not started. A common way to feel busy without committing to anything. Set a date to stop researching and build a first rough model, even with guesses in it.
• The spreadsheet dominates. Normal for a lender plan. If it is a plan for yourself, you may be building more model than the decision needs.
• Writing is a sliver. Fine for a deck. For a written plan, the sections may need more work than the time suggests.
• Review has not happened. The time you spend after someone else reads it is usually the best spent.

The total also answers a practical question. If the plan took far more hours than you expected, the first months of the business probably will too, and it is better to find that out from a document than from the business. Where a founder’s week actually goes picks up from there.

A simple log to keep alongside

The receipts tell you where the Mac time went. A one-line log each day tells you what it produced. Keep it in a note:

• The date.
• Hours on the plan (from the receipt, adjusted for other work).
• Hours away from the Mac (calls, visits, meetings).
• What moved forward: “cash flow draft done”, “rewrote the customer section”, “sent to advisor.”

When the plan is finished, this log is your honest answer to how long it took. It also makes the next plan, or the next major revision of this one, much easier to estimate.

Questions

Does Punchcard see my figures or my document? No. It records app names, and site names if you switch itemizing on. It never records document names, window titles, keystrokes or screen contents. The record is a file on your Mac, with no account and no cloud.

Can I share the time I spent with a cofounder? Yes, as a picture. Each receipt exports as a 1080x1350 PNG, or you can copy it as plain text. There are no team features, so each person’s Mac keeps its own record.

What if I miss a day’s receipt? The data stays in the local file, and a receipt printed late is headed SORRY WE MISSED YOU.