You did the work. You sent the invoice. And now you’re watching your checking account get thinner while you wait for a client who has 60 days to pay — and will probably use every one of them. That gap between work completed and money received is called a cash flow timing problem, and it’s one of the most common reasons otherwise healthy small businesses end up scrambling. This article is your map out of that gap. We’ll walk through seven real options for turning an unpaid invoice into working capital — the money you need right now to cover payroll, restock supplies, or keep the lights on. We’ll rank each one by how fast you’ll actually see cash and what it will truly cost you, not just the headline rate.
No jargon without a definition. No cheerleading. Just the straight math and a clear next step.
The 7 Options at a Glance
Before we go deep, here’s the overview. “Days to cash” means business days from application or ask to money in your account. “True cost” is the real annualized price — not just the marketing number.
| Option | Days to Cash | True Cost Range |
|---|---|---|
| 1. Early-pay discount | 3–10 | 18–36% APR equivalent |
| 2. Collections call / demand letter | 5–30+ | Near zero (your time) |
| 3. Invoice factoring | 1–3 | 15–60% APR (varies widely) |
| 4. AR line of credit | 3–7 | 8–20% APR |
| 5. Business line of credit | 3–14 | 7–25% APR |
| 6. Business credit card | Same day | 24–30% APR |
| 7. Merchant cash advance | 1–2 | 40–350% APR |
Now let’s talk through each one honestly.
Option 1: Offer an Early-Pay Discount
What it is: You call or email your client and offer them a small discount — typically 1% to 2% of the invoice — if they pay within 10 days instead of 30 or 60. You’ve probably seen this written on invoices as “2/10 net 30,” which means: take 2% off if you pay in 10 days, otherwise the full amount is due in 30.
Why the cost is higher than it looks: If your client takes that 2% discount to pay 20 days early, you’ve effectively paid them 2% for 20 days of borrowing time. Annualize that and it’s about 36% — more expensive than most credit cards. The math is straightforward: divide the discount rate by the days you accelerated payment, then multiply by 365. The U.S. Small Business Administration covers a range of financing tools in its “Fund Your Business” resource section, though the annualized cost of an early-pay discount rarely gets spelled out this bluntly in practice.
When it makes sense: When your client relationship is strong, when they actually have cash on hand, and when the alternative is a more expensive option. Don’t count on it during an emergency — you can’t force them to take the offer.
Option 2: A Direct Collections Call or Demand Letter
What it is: You (or an attorney, or a collections service) contact your client to formally request payment on a past-due invoice. This is most relevant when an invoice is already overdue — not just slow.
The real cost: Mostly your time and possibly a flat attorney fee ($150–$500 for a demand letter). If you send it to a third-party collections agency, they typically take 20%–40% of whatever they recover.
The catch: This can take weeks, damages the client relationship, and only works after the invoice is already late. It’s not a cash-flow tool — it’s a last resort. Use it for truly delinquent accounts, not for managing normal net-30 timing gaps.
Option 3: Invoice Factoring — The Fastest Legitimate Path for Most Operators
What it is: You sell your unpaid invoice to a factoring company (called a “factor”) at a small discount. The factor pays you a large percentage of the invoice’s face value — usually 80% to 95% — within 24 to 48 hours. When your client eventually pays the invoice (on their normal schedule), the factor collects that payment, takes their fee, and sends you the remaining balance. As Investopedia explains in its reference entry “Accounts Receivable Financing,” the factor is essentially buying your receivable — the money owed to you — as a financial asset. The key difference from a traditional loan is that approval hinges on your client’s creditworthiness, not your own.
A real-world example: You have a $50,000 invoice due in 60 days. A factoring company advances you 90% — that’s $45,000 in your account by Wednesday. When your client pays on day 60, the factor collects $50,000, keeps their fee (say 3% of face value, or $1,500), and sends you the remaining $3,500 reserve. Your total cost: $1,500 on $45,000 for 60 days. Annualized, that’s roughly 20% APR. Not cheap — but faster than anything except an MCA, and far cheaper than an MCA.
Two flavors you need to know:
- Recourse factoring: If your client doesn’t pay, you’re on the hook to buy back the invoice. Lower fees, more risk to you.
- Non-recourse factoring: The factor absorbs the loss if your client goes bankrupt (not just slow-pays). Higher fees, but it transfers credit risk off your books.
Industry specialists matter: Trucking factors understand freight invoices and broker relationships. Staffing factors understand weekly payroll timing. Construction factors know how to handle lien waivers and joint-check agreements. Choosing a factor that knows your industry can cut your rate and speed up the approval.
What it costs, honestly: Factoring rates run from 1%–5% per 30-day period depending on your volume, your clients’ creditworthiness, and your industry. Watch for add-on fees: lockbox fees (the factor sets up a bank account to receive client payments — sometimes $25–$75/month), ACH transfer fees ($5–$25 per wire), monthly minimums (you pay fees even if you don’t factor), and termination fees if you want to leave the contract early. The Federal Reserve’s 2025 Small Business Credit Survey found that access to financing remains a top challenge for small employers — factoring is one of the few products that approves based on your client’s credit, not yours.
Option 4: Accounts Receivable (AR) Line of Credit
What it is: A bank or specialty lender reviews all your outstanding invoices and sets up a revolving credit line (money you can draw from and repay repeatedly) — usually up to 70%–85% of your eligible receivables. You borrow against your invoices as collateral (something pledged to secure a loan) without actually selling them.
How it differs from factoring: You stay in control of collections — your clients never know a lender is involved. That’s valuable if client relationships are sensitive. But it requires that you have decent business credit and a track record. The approval process takes longer (days, not hours), and banks may require audited financials.
True cost: 8%–20% APR for most qualified borrowers in 2026’s rate environment. This is often the cheapest revolving option available to established operators.
Option 5: Business Line of Credit
What it is: Similar to a personal line of credit, but for your business. You’re approved for a maximum amount, draw only what you need, and pay interest only on what you’ve borrowed.
The catch: Your own credit profile — personal and business — drives approval. This product doesn’t care how good your client is. If you’re a newer business or have thin credit history, you may not qualify for enough to matter, or at all.
Best for: Operators who’ve been in business 2+ years, have solid credit scores, and want a flexible backstop rather than a one-time fix. The U.S. Small Business Administration’s “Fund Your Business” resource section is a practical starting point for understanding which federally backed lending programs — including SBA 7(a) loans and SBA Express lines of credit — may lower the qualification bar for eligible small businesses.
Option 6: Business Credit Card
What it is: You already know what a credit card is. A business credit card works the same way but has higher limits, business-relevant rewards, and some expense tracking features.
The real cost: Most business cards charge 24%–30% APR on carried balances in 2026. That’s painful if you’re carrying a balance for 60+ days. But for a two-week bridge — “I need to make payroll Friday, and I’ll have an invoice paid by the end of the month” — a 0% introductory period card can be nearly free.
Best for: Short-term gaps of under 30 days, or operators with a 0% promotional period who can pay it off fast.
Option 7: Merchant Cash Advance — Last Resort, Not First Call
What it is: A merchant cash advance (MCA) provider gives you a lump sum of cash today. In exchange, you agree to repay a larger lump sum — typically 1.2 to 1.5 times what you received — by giving the provider a fixed daily or weekly percentage of your revenue until the balance is repaid. MCAs are technically structured as purchase agreements rather than loans, which means they often fall outside the state usury laws (interest rate caps) that govern traditional lending — a distinction the Consumer Financial Protection Bureau has highlighted in its small business lending research and public guidance.
The math, done out loud: You take a $50,000 advance with a “factor rate” of 1.35 — which means you owe $67,500 back. If you repay over 6 months, that’s a $17,500 cost on $50,000. Annualized? Over 70% APR. Some MCAs run well past 200%.
Why people still use them: Speed. Same-day or next-day funding with minimal paperwork. If your invoices are to consumers (not businesses), factoring may not be available — and an MCA may be your only fast option.
The FTC has documented predatory practices in the MCA industry, including misleading factor-rate disclosures and aggressive collections tactics. The Federal Trade Commission’s small business guidance portal at ftc.gov/business-guidance/small-businesses covers what lenders and advance providers are required to disclose to small business owners. If an MCA provider is your only realistic option, get the full repayment amount in writing before signing — and understand that daily withdrawals from your account start immediately, regardless of when your clients pay.
How to Choose: A Quick Decision Tree
You have a B2B invoice (business-to-business) and need cash in under 3 days: Look at invoice factoring first. It’s purpose-built for this situation.
You have strong business credit and can wait a week: An AR line of credit or a business line of credit will cost you less in the long run.
You need a two-week bridge and have a 0% card available: Use the credit card, pay it before the promotional period ends.
Your client is already past due: Start a collections call now. That’s not a financing product — it’s just getting what you’re owed.
Someone is offering you same-day cash with a “factor rate” and daily repayments: That’s an MCA. Run the APR math before you sign, and review what lenders are required to disclose using the FTC’s small business guidance portal.
Your Next Step
If factoring looks like the right fit for your situation, the details matter enormously: advance rates, contract length, recourse vs. non-recourse, and those hidden fees we mentioned. Use our invoice factoring rate calculator to see what a specific invoice would actually cost you across three or four factoring scenarios — before you talk to a single sales rep. And if you’re in trucking, staffing, or construction, check our industry-specific factoring guides, where we name the specialist factors who know your paperwork and won’t charge you for the education.
You already did the work. Now let’s get you paid.