Oregon is rebuilding its weight-mile tax: the new 10-bracket table, and who wins or loses on July 1, 2027

What actually changes on July 1, 2027

Today's weight-mile tax is priced on declared weight: you declare each configuration you run, report miles per configuration, and a truck that drops its trailer or runs empty can legitimately report those miles at a lower weight. HB 3991 deletes that whole layer. From July 1, 2027, every taxable mile is priced on the vehicle's registered weight — the number on the cab card — one rate per truck, with empty miles at the same rate as loaded. Axle-count reporting ends. The 85 tables become the 10 brackets below. Vehicles registered at 26,000 lbs or less owe no weight-mile tax at all — and no longer "declare up" when they run heavy. The $5 vehicle suspension fee is gone. Flat fees shift too: the wood-chips flat fee is eliminated (those loads go per-mile), the log rate decreases, and the sand-and-gravel rate increases.

The new table, next to the old one

ODOT has already published the official 2027 schedule (Form 735-9928). Each new 6,000-lb bracket replaces three of today's 2,000-lb bands — so where you sit inside your new bracket decides whether you win or lose:

Both columns render from the same versioned rate data our tax engine files on — the 2027 rows are quarter-stamped, so a Q2 2027 Oregon return computes on today's schedule and a Q3 2027 return on the new one, automatically.

Who wins, who loses

Winners. The clearest one sits at 68,001–74,000 lbs: 18.15¢, down from as much as 21.87¢ today — a 17% cut at the top of that range. More broadly, trucks near the top of any new bracket tend to save, because the new rate lands near the old bracket-bottom (a 31,000-lb truck drops from 8.46¢ to 7.64¢).

Losers. Trucks near the bottom of a new bracket: 74,001–78,000 lbs climbs to 25.12¢ from 23–24.11¢ today (the standard 80,000-lb rig stays at 25.12¢ — unchanged). 50,001–54,000 rises to 13.25¢ from 12.31–12.77¢. Above 80,000 lbs, axle-based Table B disappears into one 26.31¢ rate — heavy-haul setups that earned per-axle discounts lose them. And the quiet, biggest one: operations built on declared-weight flexibility. If your trucks report meaningful empty or lighter-configuration miles at reduced weights today, all of that reprices to the full registered weight in July — a real increase no rate table shows.

What to do before July — and the one mandatory step

1. Watch for the MOTA (spring 2027). Every carrier must complete a Mandatory One-Time Amendment in Oregon Trucking Online: review each unit's enrolled weight and set it to the registered weight on the cab card. No TOL access yet? Request it now — ODOT is explicitly nudging carriers to.
2. Re-examine your registered weights. Your cab card becomes your tax rate. A unit registered heavier than it really runs will overpay every mile from July 1 — registration season is the moment to right-size it.
3. Model your own miles, not the averages. ODOT calls the change revenue-neutral for the industry; your fleet isn't the industry. Price a month of your actual Oregon miles against both columns above — and if you haul logs or sand and gravel, re-check whether the changed flat fees beat per-mile for you.
4. Mind the mid-year split. Q2 2027 files on the old schedule (due August 31, 2027); Q3 2027 files on the new one (due November 30, 2027). Monthly filers: the June report is the last old-structure report, the July report (due August 31) is the first new one. Due dates themselves don't move.

Why this matters beyond Oregon

Oregon runs the country's oldest and heaviest weight-mile program — top rates near 25¢ a mile, an entire compliance regime of its own, and no fuel-tax alternative for heavy trucks. When it rebuilds its structure, enforcement patterns, audit expectations, and every rate sheet on the internet go stale at once — exactly what happened when New Mexico repriced this July and vendor blogs kept quoting the old mills for months. The carriers who reprice their lanes eleven months early are the ones who never notice the transition.