Your October Financial Checklist Now That Q4 Has Started

Shantel Garcia

Oct 1

4 min read

Hand ticking a checkbox on a paper form with rows of empty boxes and a few checked boxes, close-up in soft light

Q4 is underway, and October is a good month to get a few things lined up.

There's an individual tax deadline mid-month, a Q3 worth reviewing before you plan Q4, a holiday season that's easier to budget for with some lead time, and a year-end folder that comes together nicely when you build it a little at a time.

Here's what I walk every ICS client through in October, and what I'd tell you to do even if you never became a client.

Check In On The Individual Tax Extension Deadline

October 15 is the due date for your individual tax return if you filed an extension back in April.

April feels like a long time ago by now, so consider this your friendly reminder.

If you still have documents to send your preparer, this is a good time to gather them.

A quick check-in clears up anything you are unsure about, and that is something we help clients sort out every October.

Look Back At Q3 Before You Look Ahead To Q4

It's natural to jump straight into fourth-quarter planning, and the plan gets a lot more useful when you close the loop on the third quarter first.

Pull your Q3 profit and loss and compare it against what you expected going in.

Here is the version of this we run with clients.

Say you planned for $60,000 in revenue across July, August, and September, and the quarter closed at $52,000.

That $8,000 gap matters less than the reason behind it.

If two large invoices slipped into October, Q4 may land better than your plan suggests.

If one service line quietly ran under all quarter, that same gap is likely to show up again.

Expenses are worth the same look.

A software renewal, a contractor rate, or a seasonal hire can move the number without anything feeling different day to day.

That comparison is a helpful way to see what may be carrying into Q4.

Take A Look At Your Holiday Budget

Some businesses get busier around the holidays, and some slow way down.

We see both patterns across our clients, and both are very manageable with a few weeks of lead time.

The shape of it depends on the work you do.

Nonprofits tend to see a wave of year-end giving in December, which brings its own reporting work in January.

Law firms often go quiet between the holidays and pick back up in the new year.

Behavioral health practices frequently see that same dip, then a busy first week of January.

Pull last year's November and December numbers and use them as your starting

point.

If those two months ran $12,000 above a normal month once you added seasonal payroll, contractors, and client gifts, that is the figure to build into this year's plan.

If the holidays bring a slowdown instead, you can use October to think through how much of a cash cushion would feel comfortable.

Begin Gathering Your Year-End Documents

Somewhere between now and January, your tax preparer will ask for a handful of documents: 1099 contractor information, final payroll totals, a year-end profit and loss statement, and anything else specific to your business.

Gathering them as you go is much easier than gathering them all in one sitting.

One real change is worth knowing about this year.

The 1099-NEC reporting threshold moved from $600 to $2,000 for payments made during 2026, and that $600 figure had been in place since 1954.

If you paid a contractor $1,500 this year, a 1099 is no longer required, though you can still choose to issue one.

Those forms go out to recipients by February 1, 2027, since January 31 falls on a Sunday.

Several states set their own thresholds, so it is worth confirming the rule where you file.

Create one folder now, digital or physical, and start dropping things into it as they come up.

A little effort each month between now and year end adds up to an easy January.

For the clients whose year-end we handle, that folder is where we begin.

The Bottom Line

None of this requires a finance background.

It comes down to building a few regular habits around your numbers.

October gives you a natural point to review what has already happened this year, make a few adjustments for Q4, and start getting organized for year-end.

If you would rather have a partner help build and maintain that system with you, that is exactly what I do. Book a free consult and I'll take a look at where your business stands.

Ready to get a clearer picture of your numbers?

ICS works with behavioral health practices, law firms, nonprofits, consultants, and other service-based businesses to get their books clean, their patterns visible, and their slow seasons planned for.

Visit icsaccounting.com to book a free 30-minute consultation or send a direct message. No prep required. Just show up.

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