San Luis Potosí → Aguascalientes · Autopista 57D México-San Luis Potosí
Wrapping up the trip, the homebound leg from San Luis Potosí, San Luis Potosí, back to Aguascalientes, Aguascalientes, layers another 172 km (107 miles) onto the odometer along Autopista 57D México-San Luis Potosí and tacks on roughly 1h 55m to the cumulative day. Drivers leaving San Luis Potosí, the capital potosina y nodo logístico que conecta el Bajío con el norte del país, usually pull into Aguascalientes, the centro automotriz Nissan y capital del Bajío occidental, with an empty calendar but an inbox of paperwork — toll receipts, fuel invoices, visit reports, and meeting minutes all need to be tagged inside the cab before they get tangled with other paper stacks at the office. Average fuel spend on the return holds near MXN 346.06 for the 14.3 liters (3.8 gallons) burned. Mileage reimbursement for the homeward stretch totals MXN 1118.00 at the MXN 6.50/km benchmark. Use the Clara generator to emit a single PDF combining the outbound and return legs with a QR validation code: corporate finance processes the batch within two business days. For the US professional driving the 172 km (107 mi) between San Luis Potosí and Aguascalientes, reimbursement of MXN 1118.00 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 San Luis Potosí→Aguascalientes corridor must show date, business purpose, and odometer readings.