Fast Business Funding for Payroll & Cash Flow 2026

Scan the four guides below, pick the one that matches your situation — tight payroll deadline, outstanding invoices, steady card revenue, or a revolving gap — and go straight to the numbers.

What to know before you choose

Not all fast business funding works the same way, and the wrong product can cost far more than the cash gap it fills. Here's how to orient yourself before clicking into a guide.

Speed vs. cost is the core trade-off. Online lenders and alternative products fund in 24–72 hours, but that speed is priced in. SBA 7(a) loans carry 8.5–11% APR and are the cheapest working capital option on the market — but approval takes 30–45 days, which doesn't help a payroll that's due Friday. Before you commit, use an affordability calculator to model what each monthly payment does to your cash flow.

What separates the four main options:

Product	Typical funding speed	Cost range	Best fit
Business line of credit	1–5 days (online)	8–35% APR	Recurring gaps, revolving needs
Invoice factoring	24–72 hours	1–5% per 30 days	B2B businesses with unpaid invoices
Merchant cash advance	24–48 hours	80–150% APR equiv.	High card-volume retail/restaurant
Short-term term loan	1–3 days (online)	15–45% APR	One-time lump-sum need

Lines of credit are the most flexible tool for payroll and operational gaps. You draw what you need, pay interest only on the balance, and reuse the facility. The catch: most online lenders want at least one year in business and $100,000 in annual revenue. Our best business lines of credit 2026 guide ranks current offers by draw speed and rate.

Invoice factoring is worth understanding if you invoice other businesses. You sell your outstanding receivables to a factoring company at a discount — typically advancing 80–90% of face value within 24–72 hours — and the factor collects from your customer. There's no debt on your books and no FICO minimum in most cases. The cost (1–5% per 30-day period) sounds small but annualizes quickly, so it works best as a bridge, not a permanent fixture. Knowing how to calculate your working capital needs with the current ratio method will tell you whether factoring plugs the gap or just delays it.

Merchant cash advances give you a lump sum against future card receivables, repaid as a fixed percentage of daily sales. Approval is fast and credit requirements are loose, but the APR equivalent runs 80–150% — the highest effective cost of any product here. Use one only when every other door is closed and the alternative is missing payroll entirely.

What trips people up most often:

• Applying for a term loan when they need revolving access — a line of credit is almost always the better fit for recurring cash flow gaps.
• Underestimating total MCA cost because the factor rate looks like a small number (1.2–1.5) rather than an interest rate.
• Not checking whether their credit score qualifies them for better products first. A 640+ FICO opens SBA-backed options; below 580, you're in alternative-lender territory and costs rise sharply. If credit is the obstacle, bad credit business loans 2026 covers which lenders still compete for your business and what terms to expect.
• Ignoring time-in-business requirements: most bank and SBA products require 24 months of operating history. Online lenders often accept 12 months or less, and factoring companies may have no minimum at all.

Once you know which product fits your situation, the guides below walk through exact requirements, lender comparisons, and the calculations that tell you what you can afford.