The Mileage Deduction for Guides

For a guide, most of the mileage deduction is decided before the truck leaves the drive, by two things that have nothing to do with driving.

The first is whether there is a qualifying office in the home, because that single fact determines whether the run to the ramp is a business trip or a personal commute. The second is what happened to the truck in its first year of business use, because that choice is irrevocable and can permanently close off the simpler of the two methods. Everything guides usually argue about, towing the boat, the logo on the door, how far the water is, turns out not to matter. What follows is the mechanism, from the statute, the regulation and the current IRS publication, with the figures dated because they move. Everything else on the money side is indexed at the running the business hub.

Why is commuting excluded at all?

Because it is classified as a personal expense, not a small business expense.

Section 1.262-1(b)(5) of Title 26 states that a taxpayer's costs of commuting to their place of business or employment are personal expenses and do not qualify as deductible expenses, and it is published at the Electronic Code of Federal Regulations.

That sits under section 262 itself, which disallows deductions for personal, living and family expenses except as expressly provided, and whose text is kept by the Office of the Law Revision Counsel.

Understanding it as a classification rather than a limit explains why the usual arguments fail. Nothing you carry, display or do during a personal trip makes the trip something else.

Publication 463 states the same rule three ways: you cannot deduct commuting no matter how far your home is from your regular place of work, and you cannot deduct it even if you work during the trip.

Its example is a taxpayer taking business calls and holding business discussions in the car on the way to work, and the conclusion is that those activities do not change the trip.

Which is why the productive question is not how to characterise the drive, but where the business day is treated as beginning.

Baffin Bay Outdoor Adventures, TX

Where does the day begin without a home office?

At your first client contact, which makes the drive there and the drive home both personal.

Publication 463 gives the case directly. Where you have no regular office and no office in the home, the location of your first business contact inside the metropolitan area is treated as your office.

Transportation between your home and that first contact is a nondeductible commuting expense, and so is transportation between your last business contact and home.

For a guide those two legs are usually the longest of the day. The drive to the ramp before dawn and the drive back after the boat is on the trailer are exactly the trips being excluded.

What remains deductible in that situation is the driving between contacts, since the same passage confirms you can deduct the cost of going from one client or customer to another.

A guide running one trip a day has very little of that, which is the practical shape of the problem.

Guides who run several fisheries and rarely start from the same place find this bites hardest, and the operating economics behind that pattern are examined in the multi-guide piece.

You can read the publication in full at the IRS site.

What does a home office change?

The whole shape of the day, which is why it is the single biggest lever here.

Publication 463 says that if you have an office in your home that qualifies as a principal place of business, you can deduct daily transportation costs between your home and another work location in the same trade or business.

Its second example is explicit: with a principal place of business in the home, round-trip transportation between that office and a client's or customer's place of business is deductible.

For a guide, the water is the client's location, so the whole round trip changes character rather than a fraction of it.

The condition is that the home office qualifies as a principal place of business, which is a separate test with its own requirements and not something established by putting a laptop on a kitchen table.

That is where most of the real work sits, and it is not a mileage question at all.

The requirements are gone through in the home office piece.

Fish Newburyport, MA

Does towing the boat make it business use?

No, and this is the most common mistaken belief in the trade.

Publication 463 addresses it under the heading of hauling tools or instruments, and says that hauling them in your car while commuting to and from work does not make your car expenses deductible.

The reasoning follows from the classification. A personal trip with equipment in it is a personal trip with equipment in it.

There is one carve-out, and it is narrow but real: you can deduct any additional costs you have for hauling tools or instruments, and the publication's own example is renting a trailer you tow with your car.

So an incremental cost incurred only because of the equipment can be deductible even where the mileage is not, which is a distinction worth understanding rather than ignoring.

The same section deals with the logo question, stating that putting display material advertising your business on your car does not change the use from personal to business.

A wrapped truck used for commuting is a wrapped truck used for commuting, and the wrap does not travel as evidence.

Does distance help?

Only in one specific configuration, and it is not the one people assume.

Publication 463 says that if you have no regular place of work but ordinarily work in the metropolitan area where you live, you can deduct daily transportation costs between home and a temporary work site outside that metropolitan area.

The same paragraph closes the door on the local version: you cannot deduct daily transportation between home and temporary work sites within your metropolitan area, and those are nondeductible commuting expenses.

So the guide running home water inside the metro area is commuting, while the same guide driving out to a distant river on a given day may not be.

That is a real distinction for guides who work multiple fisheries, and it means the log has to record where each day went rather than only how far.

Separately, where you do have one or more regular work locations away from home, the publication allows daily round-trip transportation to a temporary location in the same trade or business regardless of distance.

Temporary there carries a defined meaning tied to a one-year expectation, so the word is doing more work than it looks.

What are the current rates?

Two of them for 2026, which is the detail most likely to be missed this year.

The IRS publishes the standard mileage rates at a single page on its own site, listing every period back to 2011, and that page was last reviewed on 23 July 2026.

For 2026 it gives two business rates: 72.5 cents a mile from 1 January to 30 June, and 76 cents a mile from 1 July to 31 December.

The 2025 business rate was 70 cents, and 2024 was 67 cents, so the direction has been steadily upward and the mid-year change is the unusual event.

A guiding season straddles both halves of the year, which means a 2026 log has to be split at 30 June or the calculation is wrong in one direction or the other.

This has happened before, in 2022 and in 2011, so it is not unprecedented, but it is rare enough that most people will apply one rate to the whole year without noticing.

Confirm the rates for your own period on that page before filing, since it is updated and this piece is not.

Why is the first year decisive?

Because the choice of method is made once, for that vehicle, and cannot be undone.

Publication 463 states that if you want to use the standard mileage rate for a car you own, you must choose it in the first year the car is available for use in your business.

The choice has to be made by the due date of the return including extensions, and the publication says plainly that you cannot revoke it.

Having chosen it, you keep the option: in later years you can use either the standard rate or actual expenses for that vehicle, switching to actual with straight line depreciation over the remaining estimated useful life.

Not choosing it in year one closes that door permanently for that vehicle, which is a large consequence for a decision most people make by default.

Note also that in this publication car includes a van, pickup or panel truck, so a guide's tow vehicle is squarely within these rules.

How the opening season's decisions stack up generally is traced in the first tax year piece.

What closes off the standard rate entirely?

A short list, and the section 179 election is on it.

Publication 463 says you cannot use the standard mileage rate if you use five or more cars at the same time, claimed depreciation by any method other than straight line over the estimated useful life, used MACRS, claimed a section 179 deduction on the car, claimed the special depreciation allowance on it, or claimed actual expenses after 1997 for a leased car.

The section 179 entry is the one that catches guides, because expensing the truck feels like the aggressive and therefore correct move in a year with income to shelter.

It forecloses the simple method for the life of that vehicle, and simplicity has real value in a trade where the alternative is tracking every fuel receipt, repair, tyre and insurance payment.

The five-vehicle rule is about simultaneous use rather than ownership, and the publication is careful about it: alternating between vehicles is not using them at the same time.

What that election does to a different asset entirely is worked through in the boat depreciation piece.

What about the second trip of the day?

It is deductible, and it is the one piece of relief available without a home office.

Publication 463 says that if you work at two places in one day, whether or not for the same employer, you can deduct the expense of getting from one workplace to the other.

It adds a limit worth knowing: if for some personal reason you do not go directly between them, you cannot deduct more than it would have cost to go directly.

For a guide that covers the shuttle between put-in and take-out, the run between two fisheries on a split day, and the trip from the ramp to a fly shop or an outfitter for business rather than for shopping.

It also covers driving from a morning trip to an afternoon one, which is the ordinary shape of a busy summer day on a tailwater.

The publication draws one clear line around it: transportation between home and a part-time job on a day off from your main job is commuting and cannot be deducted, which matters for guides who guide around another job.

That configuration is exactly the one examined in the hobby loss piece.

Is a second vehicle treated separately?

Entirely, and that is an opportunity rather than a complication.

Because the method choice is made in the first year a vehicle is available for business use, each vehicle carries its own history and its own open options.

A guide whose main truck was expensed under section 179 years ago has permanently lost the standard rate on that truck, but a newly acquired second vehicle starts with a clean slate.

That makes the decision on the next purchase a real one rather than an inherited default, and it is worth making deliberately rather than discovering after the return is filed.

The five-or-more rule only bites on simultaneous use, so a guide alternating between two or three vehicles is nowhere near it.

What that looks like when the operation genuinely grows is worked through in the second boat piece.

What does the standard rate include?

Nearly everything the truck costs to run, which is the point of it.

Publication 463 warns that using the standard mileage rate for a year means you cannot also deduct actual car expenses that year, and lists what is absorbed: depreciation, lease payments, maintenance and repairs, gasoline including gasoline taxes, oil, insurance and vehicle registration fees.

Parking fees and tolls are dealt with separately, and business-related parking when visiting a customer is deductible while parking at your own place of business is a commuting expense.

Loan interest is also handled apart from the rate, with the publication noting that a self-employed taxpayer can deduct the business-use portion of car loan interest.

Which means the two methods are not simply a trade of accuracy for convenience. They sweep in different things, and the comparison has to be run on the same basis to mean anything.

The publication's own advice, where both methods are available, is to figure the deduction both ways and see which is larger.

Where the rest of a guide's costs land is set out in the deduction list.

What should the log actually contain?

More than a total, because a total cannot answer any of the questions above.

The distinctions that decide the deduction are all categorical rather than numerical: which trip was first, whether a site was inside or outside the metropolitan area, whether the destination was a client location or your own place of business.

A log recording only distance cannot reconstruct any of them, and reconstructing them later from memory is exactly what contemporaneous records exist to avoid.

The workable version records the date, the destination, the purpose and the miles, which is one line and takes seconds at the time.

In 2026 it also needs to fall on the correct side of 30 June, so the log should be split at the half year rather than totalled annually.

If you run more than one vehicle, the log has to be per vehicle, because the method choice attaches to the vehicle rather than to you.

Where that sits in the wider paperwork is dealt with in the bookkeeping piece.

What is worth doing this week?

Three things, in order, and only the last is about mileage.

Settle the home office question first, because it decides whether the largest driving of your season is deductible at all, and no amount of logging changes that answer.

Then find out what was done with the truck in its first business year, since that determines which methods remain open and cannot be revisited.

Then fix the log so it records purpose and destination rather than distance alone, and split it at 30 June for 2026.

None of that requires a professional, and all of it makes the conversation with one shorter when it happens.

The general trap here is treating mileage as an arithmetic problem when it is a classification problem, and classification is settled by facts you either recorded or did not.

What the whole set of guide deductions looks like once those facts are in place is covered in the estimated taxes piece.