TD Merchant Solutions Interchange Plus vs Flat Rate in 2026

TD Merchant Solutions FLAT IPLUS (Interchange Plus) pricing is significantly cheaper than TD DRAF (Discount Rate/Ad Valorem Fee flat rate) for the majority of established Canadian businesses. While our Moneris vs TD Merchant Solutions rate comparison explores how competitors challenge TD on card-present volume, within TD's own ecosystem, passing through wholesale card network rates yields far lower overall processing costs than paying a fixed flat-rate percentage. Across 15 real TD merchant statements analyzed by our team, merchants on Interchange Plus achieved an average 1.87% blended effective rate.

The financial advantage of FLAT IPLUS over flat-rate models stems directly from how transaction costs are calculated. Flat-rate models charge a set fee regardless of card type—such as standard 2.9% plus $0.30 aggregator structures. TD FLAT IPLUS passes through the actual card network interchange cost plus a fixed processor margin. In a published comparison by ClearSale, a business processing 100 online transactions per day saved 1.8% in effective fees by moving from a 2.9% plus $0.30 flat rate to Interchange Plus. This equates to approximately $1,350 monthly or $16,200 annually. For physical stores, switching from a flat rate to Interchange Plus resulted in a 2.45% reduction in processing fees.

If you know how to read a TD merchant statement, you will see TD DRAF bundles costs into a single ad valorem percentage fee. This obscures card-level wholesale rates and overcharges on low-cost transactions. Established Canadian merchants processing regular debit and standard credit payments consistently achieve lower total costs under FLAT IPLUS. Achieving parity between wholesale costs and actual statement fees makes Interchange Plus the superior economic choice for predictable retail and service environments.

Underlying network rates set by Visa Canada and Interac make Interchange Plus pricing highly lucrative for Canadian merchants. Under Visa's published table for small merchants, the Consumer Electronic rate is 0.77%. The Interac Flash contactless tier 1 program provides a rate of $0.02 per debit contactless transaction for specific Merchant Category Codes. Because debit and basic credit transactions dominate domestic sales, FLAT IPLUS allows merchants to capture these sub-1% wholesale costs directly.

Flat-rate pricing structures drastically overcharge for these high-volume basic transactions by applying a uniform percentage across all payments. Even when premium cards incur higher fees—such as the Visa Infinite Privilege CNP Small Merchant rate of 2.3%—the higher cost of those select cards is heavily offset by the sheer volume of 0.77% credit transactions and $0.02 Interac debit transactions.

TD assigns specific merchant interchange rates based on the product or service category that accounts for the majority of a business's sales. Final confirmation of applicable rates occurs during account set-up, or merchants can contact TD at 1-800-363-1163 for assistance. Standard interchange rates apply to businesses outside specific qualifying categories. Published updates outline upcoming rate changes scheduled for October 2026.

TD Merchant Solutions applies specific qualifying limits and network clearing surcharges that directly impact Mastercard processing costs under Interchange Plus. Merchants must process less than $175,000 in annual Mastercard transaction volume to qualify for the Mastercard Small Business Interchange program. Businesses that exceed $175,000 in annual Mastercard volume automatically move to regular Canada Intracountry Consumer Credit interchange rates.

Mastercard also introduced specific clearing and program fees that pass through to merchants on FLAT IPLUS schedules. For standard clearing, Mastercard charges $0.0081 for transactions of $35 or under and $0.0315 for transactions over $35. High-risk businesses classified under Mastercard Specialty Merchant programs face an additional $0.032 transaction fee and a 0.113% volume fee.

Additional network fees apply based on settlement timelines and currency choices. Mastercard imposes an Authorization Validity fee of 0.0339% on transactions cleared after 72 hours. TDMS aims to close batches after 48 hours to mitigate this fee for merchants. Mastercard also applies a 0.113% USD fee for transactions settled in a currency other than the merchant's local CAD currency.

TD DRAF flat-rate pricing benefits micro-merchants, businesses with low annual volume, or operators who prioritize absolute fee predictability over maximum savings. According to research from ClearSale, businesses considering a switch to Interchange Plus typically benefit most when they have at least 12 months of processing history and an annual processing volume exceeding $50,000. Merchants below these operational thresholds may find the simplicity of flat-rate billing preferable.

Hardware choices also dictate whether TD FLAT IPLUS pricing is accessible. TD's published interchange rate documentation states that standard interchange rates do not apply to transactions processed through TD Mobile POS or TD Mobile Pay terminals. Merchants reliant on these specific mobile devices cannot access wholesale interchange pricing. Flat-rate structures become the default operational choice for these mobile terminal setups.

Merchants can switch processing models or exit their TD Merchant Solutions contract by leveraging specific fee-change cancellation windows and contract terms. Under TD's merchant agreement terms, businesses operating without a fixed-term agreement cancel their processing services at any time without incurring a financial penalty.

For merchants bound by fixed-term contracts, TD rules allow cancellation within 70 days after a new or increased domestic Payment Card Network Operator Core Fee or TDMS Fee takes effect. This 70-day window provides a fee-free exit opportunity whenever network card brands or TD adjust base fees.

When transitioning to a standard merchant account, underwriting typically takes 2 to 3 days to complete. Merchants seeking to adjust their rate structure or verify their category rates call TD at 1-800-363-1163 during the account set-up process to ensure optimal pricing alignment before signing.