Five products show up in AP and bill-pay searches for small and mid-market teams: BILL, Nickel, Aspire, Synder, and Melio. Comparing their plan prices side by side is the wrong first move, because the plan price answers a different question for each one: BILL and Melio charge per seat, Nickel and Aspire charge a flat account fee regardless of headcount, and Synder charges by synced transaction volume rather than seats or AP-specific fees at all.
Plan price and pricing basis, by vendor
| Vendor | Plan | Price | Pricing basis |
|---|---|---|---|
| BILL | Essentials | $49 | per user, per month |
| BILL | Team | $65 | per user, per month |
| Nickel | Nickel Core | $0 / month | flat per account, not per user |
| Nickel | Nickel Plus | $35 / month | flat per account, not per user |
| Aspire | Business Account | $0/month | US surface, single tier, no plan ladder; fees are per-transaction, not per-seat |
| Synder | Basic | $65/mo | priced by 500 synced transactions/month, not by seat |
| Melio | Go | $0 /free forever | free tier, 5 free ACH/month |
| Melio | Core | $25/mo | $10/mo per additional user beyond the first seat |
Synder is not an AP or bill-pay tool in the same sense as the other four. It syncs sales-channel transactions into QuickBooks, Xero, or NetSuite for reconciliation, and its plan tiers scale with monthly synced-transaction volume. It earns a place on this page because its pricing pattern, volume-tiered rather than seat-tiered, is one more argument against judging any of these five on sticker price alone.
Where the fee schedule adds to the sticker price
The plan price is the entry fee. What you pay to move money is a separate schedule, and none of it shows up on the plan comparison above.
| Vendor | Fee | Amount |
|---|---|---|
| BILL | ACH / ePayment | $0.59 |
| BILL | Card payment | 2.9% |
| BILL | Instant payment | 1.0% ($9.99 min fee, $100 max fee) |
| BILL | Mailed check | $1.99 |
| Nickel | Standard ACH | $0 |
| Nickel | Card receive | 2.9% |
| Nickel | International card | 2.9% + 1% |
| Aspire | Local transfer | Free |
| Aspire | FX conversion | From 0.22% |
| Aspire | Treasury | From 0.15% |
| Melio | Card payment | 2.9% |
| Melio | Same-day wire | 1% ($10 min, $75 max) |
Nickel's standard ACH is free: $0. That is the sharpest contrast on this table, since BILL charges $0.59 per ACH transaction on top of its per-user plan price. Melio's Core plan includes 20 free ACH/month before any per-transaction fee applies. None of these figures is large in isolation. They compound with volume, which is exactly what a plan-price comparison hides.
Why the multiplier matters more than the plan tier
BILL prices per user, per month. Add a fourth AP user and the monthly bill grows by another $49 on Essentials, or $65 on Team, whether or not that person approves more invoices than anyone else on the team. Melio runs the same logic once a team leaves its free tier: $25/mo is the Core base, then $10/mo per additional user for every seat past the first.
Nickel and Aspire do not multiply by headcount at all. Nickel is flat per account, not per user. Unlimited users is already included in the $35 / month line, so a fifth approver costs nothing on the plan side. Aspire's US account is US surface, single tier, no plan ladder; fees are per-transaction, not per-seat, so the same is true there. Synder's multiplier is different again: it is metered by sync volume, not seats. 1 additional user is included free on Basic, and the plan upgrades when 500 synced transactions/month is exceeded, not when headcount grows.
The practical read: a growing AP team multiplies BILL's or Melio's per-seat price every time it adds a person, while the same growth does not move Nickel's or Aspire's plan line at all. That gap, not the tier names, is the real cost question for a team that expects to add approvers. It is the subject of its own page: how to avoid per-user AP pricing.
What this page does not calculate for you
This page names the two cost drivers and lists every fee figure published on each vendor's pricing page. It does not compute a total monthly cost for any specific business, because that number depends on two inputs only the reader has: how many people will use the tool, and how many payments of each type (ACH, card, instant, wire, mailed check) move through it in a typical month. BILL's 2.9% card fee and Nickel's 2.9% card fee both scale with a transaction volume this page cannot estimate for you. Lay your own headcount and transaction-volume assumptions against these figures on the AP pricing worksheet.
Check current plans and fee schedules: BILL, Nickel, Aspire, Synder. Melio's current plans and fees are listed on its own pricing page.