Relay Alternatives in 2026: 5 Business Banking Platforms Compared on Account Limits Past 20
Relay gives a business 20 checking accounts, or 10 for a sole proprietorship, on its $0 Starter and $30 Grow plans. Scale raises that to 50 and lists at $120 a month, discounted to $90 for a limited time. Mercury, Brex and Slash all go past 20 on a $0 plan. Slash, a business banking platform¹with its own corporate card, sets no cap on virtual accounts on either of its two plans.
Relay is the official banking platform for Profit First budgeting, and 20 is plenty for the method's five core accounts. It runs out for a property manager separating funds by unit, an agency separating budgets by client or a contractor tracking cash per job, because every new unit, client or job adds an account. On the day that business needs its 21st account, it either pays for a higher tier or merges two budgets that were meant to stay separate.
The five platforms below are compared on what matters once the account count becomes the limit. You'll see how many accounts each allows and on which plan, how far deposit coverage reaches, what the fees are and which accounting platforms each one syncs to.
Key Takeaways
- Slash sets no cap on virtual accounts on its $0 and $25 plans, and each account has its own account and routing numbers.
- Relay allows 20 checking accounts below its $90 Scale plan and 50 on Scale.
- Brex allows up to 240 uniquely numbered checking accounts on a business account with no monthly fee.
- Mercury allows up to 100 checking and 100 savings accounts at no additional cost, so its $0 plan clears 20 with a published ceiling.
- Rho and Aspire publish no account count, so a business should confirm the number with each before opening.
What to Check When 20 Accounts Is Not Enough
The account limit is rarely a problem at signup. A business opening its first account might set up four or five, and every published limit here covers that. It becomes a problem when the business grows in a direction that multiplies accounts, through more clients, more properties, more jobs or more entities.
At that point you need to know how many accounts you get, which plan unlocks them, and whether each one is a checking account with its own numbers or a budgeting bucket inside a single account.
That last difference shows up the first month a client pays by ACH. A bucket inside one checking account shares that account's numbers, so every client pays into the same place and someone splits the money afterward. A separate account with its own numbers lets each client pay straight into its own budget, and the deposits reach the ledger already separated.
- How many accounts, and on which plan. A published ceiling, a paid tier that raises it, or no cap at all.
- What each account is. A checking account with its own account and routing numbers, or a sub-account inside one.
- Deposit coverage across all of them. The FDIC ceiling the provider reaches through its sweep network.
- Which accounting platforms it syncs to. QuickBooks Online and Xero only, or NetSuite and Sage Intacct as well.
1. Slash: Best Overall for Businesses That Need More Than 20 Accounts
On Slash, a property manager can add a building and an agency can add a client without changing plan, because there is no cap on virtual accounts. An Owner or Admin opens and closes them from the dashboard on Free or Pro. Relay, Mercury and Brex each publish a ceiling. More than 10,000 businesses use Slash, which raised a $100M Series C at a $1.4B valuation led by Ribbit Capital in April 2026.
What Slash Gives a Business With Many Budgets
- **Unlimited virtual accounts.** Each one receives external deposits on its own account and routing numbers, and the help center says there is no cap on how many a business creates, on any plan.
- Coverage across every account. Deposits are FDIC-insured² up to $150 million through a sweep network of partner banks.
- A card per account or vendor. Both plans come with unlimited virtual cards, each with its own spend limit, per-transaction ceiling and merchant restriction. Card groups roll a client's or a property's cards into one budget to watch.
- Approvals before money moves. Multi-step approvals route an outgoing payment to a named approver, and Bill Pay holds any invoice above an approval threshold until a named approver signs off.
- Coding before the ledger. Mapping rules categorize card and bank transactions in Slash before they sync to QuickBooks Online, Xero, Sage Intacct or NetSuite through the accounting integration.
- Entities and reporting in one login. A business with subsidiaries switches between them through multi-entity, and analytics shows spend by account, card or merchant.
"Creating margin in a small-margin business gives you options you wouldn't otherwise have."
Christopher Wilts, who runs the Los Angeles 3PL Eco Fulfillment and the postage platform ShipLogix, a Slash customer
What It Costs
Slash publishes both plans and their transfer fees on its pricing page. Free is $0 a month with up to 1.5% cashback on the Slash Visa® Platinum Card. It charges $1 for same-day ACH and $6 for a domestic wire.
Pro is $25 a month with up to 2% cashback and $0 on same-day ACH, domestic wires and outgoing FedNow or RTP. Both plans carry the same uncapped account count, so the choice between them comes down to card spend and transfer volume.
The standard in finance
Slash goes above with better controls, better rewards, and better support for your business.
2. Mercury: A Fit for Businesses That Want Free USD Wires
Mercury clears 20 accounts on its free plan. A business can open up to 100 checking and 100 savings accounts, each with a unique account number, at no additional cost. Each one can be set up for a vendor, an expense type or a team, with its own virtual debit cards or auto-transfer rules.
Checking has no monthly fee. Mercury sends USD wires free on the standard option and charges $15 for a guaranteed full-amount wire. Deposits are eligible for up to $5 million in FDIC coverage through partner sweep networks. Paid plans run $29.90 a month for Plus and $299 for Pro, billed annually. NetSuite bank feeds are free on every plan, and Mercury's pricing page lists NetSuite categorizations under Pro.
Mercury suits a business that sends a lot of USD wires and expects to stay under 100 budgets. A business tracking more than 100 clients, properties or jobs in separate checking accounts will exceed that ceiling.
3. Brex: A Fit for Funded Companies That Want Up to 240 Accounts
Brex's business account lets a company create up to 240 uniquely numbered checking accounts, with no monthly fee, free same-day ACH and free domestic wires. Idle cash can move into its treasury with no minimum, and the Vault sweep spreads deposits across program banks for up to $6 million in FDIC coverage.
The Essentials plan costs $0 per user, and Brex lists direct sync with QuickBooks Online, Xero, NetSuite and Sage Intacct. Its card earns points, from 7x on rideshare down to 1x on everything else.
The fit is a funded company that wants hundreds of numbered accounts and a card on the same platform. Brex's account requirements say it serves companies that have taken equity funding of any amount or plan to soon, or that earn more than $500,000 a year. It also takes tech startups on a path to those marks when an existing customer or partner refers them. A contractor or property manager with no outside funding and under $500,000 in revenue falls outside those criteria.
4. Rho: A Fit for Startups That Want Treasury Beside Checking
Rho pairs checking with a treasury account, which suits a startup that wants reserves earning next to its operating cash. Its business checking costs $0 a month with no minimum balance, sends domestic ACH and wires with no per-transaction fee, and syncs to QuickBooks Online, NetSuite, Sage Intacct and Xero. Checking is insured up to $250,000 through Webster Bank, a division of Santander Bank, N.A., and Rho offers up to $75 million through a separate savings account.
Rho's help center describes multiple operating accounts for one business without giving a number, so a business leaving Relay over the count should get that number from Rho first. Rho Treasury also opens with a $50,000 minimum, which rules it out for a business holding less than that in reserve.
5. Aspire: A Fit for Businesses Holding Several Currencies
Aspire is built for a business that juggles a few currencies. Its US account holds 13 of them in multi-currency accounts, and the Basic plan costs $0 with no minimum balance and free local ACH and wire transfers. Deposits carry FDIC protection up to $100 million through its partner bank, and the corporate card pays 1.5% on eligible spend.
That makes Aspire a fit for a company billing clients abroad in their own currencies, as long as the account count works. Neither its US pricing page nor its help pages give a number, so ask Aspire before moving budgets over. The pricing page names QuickBooks and Xero, and NetSuite requires a Custom Plan.
Side-by-Side Comparison
Provider figures reflect publicly published information as of September 2026 and are subject to change.
How to Choose a Relay Alternative by Account Count
Start from the number of accounts you will need in two years, then work down the list.
- Count accounts by what drives them. Add up clients, properties, jobs or entities, then add the five core Profit First accounts.
- Price the plan behind the number. Fifty accounts cost $90 a month at Relay. Mercury covers up to 100 checking accounts and Brex up to 240 at no added cost, and Slash sets no cap on its $0 plan.
- Confirm each account has its own numbers. A client or tenant paying into a dedicated account needs its own account and routing numbers.
- Match the ledger. Relay connects to QuickBooks Online and Xero only, while Slash, Brex and Rho add NetSuite and Sage Intacct.
- Add up deposit coverage. Coverage does not grow with the account count, so thirty accounts holding more than $3 million between them sit above Relay's FDIC ceiling.
Then run the numbers for your own count. At 35 accounts, Relay Scale costs $1,080 a year at the discounted price, Mercury and Brex cost nothing, and Slash costs $0 on Free or $300 a year on Pro. Pro earns up to 2% cashback and Free up to 1.5%. On $30,000 of monthly card spend, that extra half point is worth up to $1,800 a year, six times Pro's $300 fee.
Setting Up 30 Accounts in Slash
A business with many budgets needs its accounts, cards and approvals to line up, so each budget can be read on its own.
- An Owner or Admin opens a virtual account for each client, property or job, each with its own account and routing numbers. The five core Profit First accounts for income, profit, owner's pay, tax and operating expenses sit beside them.
- Issue a card for each account. Every card carries its own ceiling and merchant restriction, and a card group rolls them into one budget.
- Set approval rules so any outgoing payment above a threshold goes to a named approver before it leaves.
- Map the ledger once. Expense management rules code each transaction, so every account's activity arrives categorized.
- Bill through invoicing, which collects by bank transfer, so each client can pay into its own account.
- Hold reserves in a treasury account⁶ backed by money market funds from Morgan Stanley and BlackRock, with no minimum balance.
Slash's pages for agencies and contractors walk through the same setup for those businesses.
Conclusion
Past 20 accounts, the choice comes down to the ceiling, the plan that unlocks it and whether each account carries its own numbers. Relay still fits a business that runs Profit First inside 20 accounts. Mercury allows 100 checking accounts at no added cost, and Brex allows up to 240 for a company that meets its funding or revenue bar.
Slash sets no cap on a $0 plan and gives each account its own card and account numbers, with approval rules and ledger mapping applied across them. A business can add a client or a property without changing tier.
Talk to the Slash team about moving more than 20 accounts from Relay.
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FAQs
1. Which business banking platforms let you open more than 20 accounts?
Slash, Mercury and Brex all do on a $0 plan. Slash sets no cap on virtual accounts on its $0 and $25 plans, and each has its own account and routing numbers. Mercury allows up to 100 checking and 100 savings accounts and Brex up to 240 checking accounts, while Relay stops at 20 below its Scale plan.
2. Does Slash charge more for extra accounts?
No. Unlimited virtual accounts come with the $0 Free plan and the $25 Pro plan, and an Owner or Admin opens or closes them from the dashboard.
3. Does each Slash account have its own routing number?
Yes. Every virtual account has its own account and routing numbers, and Slash's help center says subaccounts receive external deposits on them directly. A client or tenant can pay into a dedicated account, and each budget's activity stays separate in the ledger.
ACH Routing Numbers Explained: How They Work and Where to Find Yours
4. How does Slash compare with Relay for accounting integrations?
Slash covers two more ledgers. It syncs to QuickBooks Online, Xero, Sage Intacct and NetSuite and categorizes each transaction before it syncs. Relay integrates with QuickBooks Online and Xero and lists neither NetSuite nor Sage Intacct.
5. How much FDIC coverage does Slash offer across many accounts?
Slash business checking deposits are FDIC-insured up to $150 million through a sweep network of partner banks, and that coverage extends across all of a business's virtual accounts. Relay offers up to $3 million through its sweep network, and Brex up to $6 million through its Vault sweep.
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