Texas prices tolls one authority at a time — there is no statewide rate card to quote, and the premium for paying by plate instead of a transponder is set per authority, not uniform across the state. This page covers the authorities whose published tables sit in Toll Math's verified Texas source set: the North Texas Tollway Authority (NTTA), tolling gantry-by-gantry across the Dallas–Fort Worth metro on an influence-distance model (S1); the Central Texas Regional Mobility Authority (CTRMA), pricing Austin-area mainlines plaza by plaza (S3); and the Harris County Toll Road Authority (HCTRA), publishing per-road, per-direction, per-axle tables for its Houston-area tollways (S5). The roads are electronic-first: NTTA and CTRMA take no cash at the road (S2, S3, S7), HCTRA is mixed (S6), and dynamic managed lanes — CTRMA's MoPac/183 express lanes price live through its calculator (S4) — render as a toll that varies rather than a static row.
The gap between paying with a tag and paying by plate is the Texas story, and it is local. At NTTA the verified table prices "Wycliff Main Lane Gantry (MLP1) $1.94 [TollTag] $3.88 [ZipCash]" — exactly 2× (S1). At CTRMA the 2026 table prices "Lakeline Mainline $0.87 [TxTag] $1.31 [Pay by Mail]" — 1.5× (S3). At HCTRA the live table shows a $0.15 gap on the Sam Houston Northeast Mainline pass-through: $1.35 "2 Axles EZ TAG Discount" against $1.50 "2 Axles TAG" (S5). Same state, three different plate premiums — which is why Toll Math prices each authority's own published columns instead of one averaged number, and why even tag holders watch one CTRMA rule: an unmounted tag carries a stated 10% increase over the mounted-tag rate (S3).
Those figures are published snapshots that move on three different clocks. NTTA's tables run biennially — "Toll Rates Effective July 1, 2025 Through June 30, 2027" (S1) — CTRMA revises every January 1, current rates effective 2026-01-01 (S3), and HCTRA sets rates ad hoc with no effective date visible in its live tables (S5). Toll Math ships a dated snapshot of these published sources, shows which authority each row came from, and links every table — so you can see what a tag saves over plate billing before you drive, and verify current figures at the official sources before you rely on a total.
| Road | Gantry · class · framing | TollTag | ZipCash |
|---|---|---|---|
| North Texas Tollway Authority | Wycliff Main Lane Gantry (MLP1) · 2 axles · eff. 2025-07-01 through 2027-06-30 (S1) | $1.94 | $3.88 |
| North Texas Tollway Authority | Mockingbird Lane gantry · 2 axles · eff. 2025-07-01 through 2027-06-30 (S1) | $1.41 | $2.82 |
| Road | Mainline · class · framing | TxTag | Pay by Mail |
|---|---|---|---|
| Central Texas Regional Mobility Authority | Lakeline Mainline · 2 axles · eff. 2026-01-01 (S3) | $0.87 | $1.31 |
| Central Texas Regional Mobility Authority | Park Street Mainline · 2 axles · eff. 2026-01-01 (S3) | $2.00 | $3.00 |
| Central Texas Regional Mobility Authority | MoPac/183 Express Lanes · 2 axles · live pricing (S4) | Toll varies — see official calculator | |
| Road | Road segment · class · framing | 2 Axles EZ TAG Discount | 2 Axles TAG |
|---|---|---|---|
| Harris County Toll Road Authority | Sam Houston Northeast Mainline pass-through · 2 axles · live table, no effective date published (S5) | $1.35 | $1.50 |
Rates: published tables from the North Texas Tollway Authority (NTTA 2025–2027 toll rate tables), the Central Texas Regional Mobility Authority (rates effective January 1, 2026) and the Harris County Toll Road Authority (live toll rate tables); plate premiums are set per authority and HCTRA publishes no effective date — verify current figures before relying.
Rates as of 2026-11-14.
No single official publishes that trip end to end. The corridor crosses several tolling authorities, each publishing rates only for its own slice — NTTA covers Dallas-area roads, CTRMA Central Texas, HCTRA Harris County — and searches for "dallas to houston toll cost" have no single page answering the whole corridor. Toll Math does the cross-authority math for the roads it has verified: NTTA's gantries in the metro, where the verified 2025 table prices Wycliff Main Lane Gantry at $1.94 with TollTag against $3.88 on ZipCash (S1); CTRMA's Central Texas mainlines, where the verified 2026 table prices Lakeline Mainline at $0.87 with TxTag against $1.31 on Pay by Mail, effective 2026-01-01 (S3); and HCTRA's Houston-area table, where the Sam Houston Northeast Mainline pass-through is $1.35 with the EZ TAG discount against $1.50 without it (S5). Run your route in Toll Math and it prints each authority's own row, with that authority's own plate premium, instead of one invented total — and because dynamic managed lanes price live and some toll roads on long-haul routes sit outside the verified source set, verify current figures at the official sources before you rely on a grand total.
TxTag is the statewide tag — CTRMA publishes its transponder column under exactly that name, with Pay by Mail as the plate fallback (S3) — but the authorities Toll Math prices also run their own programs: NTTA prices against TollTag, a transponder its trip-planning page describes as valid across Texas, Oklahoma, Kansas, Pennsylvania, Illinois, Massachusetts, North Carolina, Maryland, Ohio, and most of Florida, Colorado, and Indiana (S2), and HCTRA's low column is the EZ TAG discount (S5). What you need is a way to pay, because every authority bills your plate when no tag does — ZipCash at NTTA (S1), Pay by Mail at CTRMA (S3), a non-tag column at HCTRA (S5) — and the published plate rate is the higher one: $1.94 becomes $3.88 at NTTA's Wycliff Main Lane Gantry (S1), $0.87 becomes $1.31 at CTRMA's Lakeline Mainline (S3), $1.35 becomes $1.50 at HCTRA's Sam Houston Northeast Mainline pass-through (S5). Even tag holders face one CTRMA rule: a tag riding unmounted instead of on the windshield carries a stated 10% increase (S3). Which tag is worth carrying depends on whose roads you drive — Toll Math prints each authority's columns side by side.
Not where Toll Math can prove it. None of the Texas rate sources in the verified set publishes an E-ZPass price: NTTA's tables price TollTag against ZipCash (S1), CTRMA's price TxTag against Pay by Mail (S3), and HCTRA's price the EZ TAG discount against a non-tag column (S5). E-ZPass is, in the research behind this page, the toll network of other states — Ohio, Illinois, Pennsylvania and the East — not as a billing program with published Texas rates, and Texas tags carry their own interstate reach instead: NTTA describes TollTag as valid across nine states plus most of Florida, Colorado, and Indiana (S2). Whether E-ZPass transponders are accepted at Texas authorities, and at what price class, was outside this page's verified source set — so rather than guess a rate, Toll Math prices only the programs above and treats your E-ZPass in Texas as a question to settle with each authority before you rely on it.
The verified Texas rate tables price how you pay, not how a skipped toll escalates, so this page quotes no Texas violation-fee amount. What they do establish is the first rung: when no transponder pays, the trip bills at the authority's plate rate, which is already the higher published price — ZipCash at NTTA, exactly 2× the tag rate on the verified Wycliff Main Lane Gantry row, $1.94 against $3.88 (S1); Pay by Mail at CTRMA, 1.5× the TxTag rate on the verified Lakeline Mainline row, $0.87 against $1.31 (S3); and the non-tag column at HCTRA, $1.50 against $1.35 with the EZ TAG discount on the verified Sam Houston Northeast Mainline pass-through (S5). What comes after the plate bill — administrative fees, civil penalties, collection steps — is set separately by each authority and sits outside this page's verified source set, so verify the full consequences at the authority that owns your road before deciding it's cheaper to skip a toll.
There is no single Texas toll price, because there isn't a single Texas rate structure: NTTA tolls gantry-by-gantry on an influence-distance model (S1), CTRMA prices per mainline plaza (S3), and HCTRA publishes per-road, per-direction, per-axle tables (S5). The verified examples show the range a 2-axle trip can occupy — $1.41 with TollTag at NTTA's Mockingbird Lane gantry, $2.82 on ZipCash (S1); $2.00 with TxTag at CTRMA's Park Street Mainline, $3.00 on Pay by Mail (S3); $1.35 with the HCTRA EZ TAG discount, $1.50 without it (S5) — and they show the fact a statewide average would miss: the plate premium is set per authority, running exactly 2× at NTTA, 1.5× at CTRMA on those verified rows, and a $0.15 gap on the verified HCTRA row. Toll Math prices your actual road and gantry from each authority's published table rather than guessing a state.
On the roads this page prices, mostly no. NTTA runs open-road gantries where the fallback is a ZipCash bill, not a hand-off at the road (S1, S2), and CTRMA lists no cash plazas at all — its published channels are tag, QR code, online, phone, mail, or an in-person office (S7). HCTRA is mixed: its facility information names several all-electronic roads — the Sam Houston between US 59 N and SH 225, Westpark, the Katy Managed Lanes, and Tomball (S6) — while its older printed schedule shows cash columns on other roads; that schedule predates the live tables and the current list of cash plazas has not been re-verified, so Toll Math treats "which HCTRA roads take cash" as unverified and prices HCTRA from its live tag and non-tag columns instead (S5, S6).