Tamaulipas → Tamaulipas · Autopista 40D Reynosa-Monterrey
Punching Matamoros, Tamaulipas, into the GPS for the trip back from Reynosa, Tamaulipas, the dashboard once again shows the 102 km (63 miles) separating the two cities along Autopista 40D Reynosa-Monterrey and estimates 1h 8m to wrap up the return. Reynosa, the frontera con McAllen y polo maquilador del noreste fronterizo, fades in the rear window while the vehicle picks up the homeward path toward Matamoros, the frontera con Brownsville en el delta del río Bravo. Unlike the outbound leg, it pays to walk around the truck before pulling out — fuel level, tire pressure, dashboard alerts and load straps all deserve a fresh look, because there is less slack to absorb a surprise once fatigue has settled in. Topping off the tank costs roughly MXN 205.70 to cover the same 8.5 liters (2.2 gallons) consumed on the way out. The return reimbursement reaches MXN 663.00 at the MXN 6.50/km benchmark. Before pulling into the driveway, close out the Clara receipt with the final odometer reading: corporate finance accepts the digital file with no wet-ink signature required. For the US professional driving the 102 km (63 mi) between Reynosa and Matamoros, reimbursement of MXN 663.00 stays non-taxable to the employee when the employer follows an accountable plan under Treas. Reg. §1.62-2 and reimburses at or below the IRS standard mileage rate. US employers generally reimburse at the IRS standard mileage rate so the payment stays non-taxable to the employee under Pub. 463. Keep the IRS-compliant expense report (Form 1040 Schedule C, line 9) alongside the fuel receipt from any EIA-tracked retail station network pump used along the leg; Internal Revenue Service (IRS) examiners pull contemporaneous mileage logs first when auditing Schedule C unreimbursed business expenses, and the Reynosa→Matamoros corridor must show date, business purpose, and odometer readings.