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Business Loan

SBA Loan Calculator

Estimate monthly payments for an SBA 7(a) loan, the most common SBA loan program. Includes the SBA guarantee fee which varies based on loan amount and guarantee percentage.

By Quick Loan Calculators Team, Financial Content TeamLast reviewed: April 2026
$350,000
7.5%

Monthly Payment

$4,248.04

Loan Amount

$350,000.00

SBA Guarantee Fee

$7,875.00

Total Financed

$357,875.00

Total Interest

$151,889.75

Total Cost

$509,764.75

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How the SBA Loan Program Works

The Small Business Administration does not lend money directly to businesses. Instead, it partners with approved banks, credit unions, and online lenders by guaranteeing a portion of each loan, typically 75-85%. This guarantee means the lender recovers most of its money even if the borrower defaults, which makes lenders willing to offer lower rates, longer terms, and smaller down payments than they would on conventional loans. The borrower pays for this guarantee through a one-time guarantee fee, calculated as a percentage of the guaranteed portion of the loan. For a $350,000 loan with a 75% guarantee, the fee is based on the $262,500 guaranteed amount, not the full loan. This fee is usually financed into the loan so you do not need to pay it out of pocket. SBA loans come in several programs: the 7(a) for general business purposes, the 504 for real estate and heavy equipment, Express for fast turnaround, and Microloans for smaller amounts. Each program has different maximum amounts, terms, and eligibility rules.

SBA Guarantee Fee Schedule Explained

The SBA guarantee fee is tiered based on loan size and can add a meaningful amount to your financing costs. For loans of $150,000 or less, the fee is 2% of the guaranteed portion. For loans between $150,001 and $700,000, the fee jumps to 3%. Loans above $700,000 carry a 3.5% fee. There is also an ongoing annual service fee of about 0.55% of the outstanding guaranteed balance, which your lender typically builds into your interest rate rather than billing separately. Here is a concrete example: on a $500,000 loan with a 75% guarantee, the guaranteed portion is $375,000 and the upfront fee is 3%, or $11,250. If you finance that fee, your total loan becomes $511,250 and your monthly payment increases slightly. The SBA periodically adjusts or waives these fees through legislative action. During economic downturns, Congress has temporarily eliminated guarantee fees on smaller loans. It is worth checking the current fee schedule on sba.gov before applying, as the rates in effect when your loan closes are the ones that apply.

SBA Loan Eligibility Requirements

SBA eligibility starts with basic requirements: your business must be a for-profit company operating in the United States, the owner must have invested their own time or money into the business, and you must have tried to use other financial resources before seeking SBA financing. Beyond these basics, lenders apply their own underwriting criteria. Most want to see a personal credit score of at least 650-680, though some Preferred Lenders will work with scores as low as 620 for strong applications. Your business should generally have at least 2 years of operating history, though startups can qualify through the SBA Microloan program or with strong collateral and experience. The SBA sets size standards by industry using either annual revenue or employee count. Most businesses with fewer than 500 employees or under $8 million in annual revenue qualify, but the exact thresholds vary. Check the SBA size standards table for your specific NAICS code. Certain business types are excluded: real estate investment, lending, gambling, and most nonprofit organizations cannot get SBA loans.

How to Strengthen Your SBA Loan Application

The single most impactful thing you can do is organize your financial documentation before approaching a lender. SBA applications require 3 years of personal and business tax returns, year-to-date financial statements (profit and loss, balance sheet, cash flow statement), a personal financial statement (SBA Form 413), and a business plan or projection for newer businesses. Having these ready and consistent with each other saves weeks of back-and-forth. Lenders focus heavily on your debt service coverage ratio. Calculate this yourself before applying: divide your annual net operating income by your total annual debt payments including the proposed new loan. If the result is below 1.25, you may need to restructure existing debt, pay off some obligations, or request a longer loan term to lower the monthly payment. Working with a Preferred Lender Program (PLP) bank can significantly speed up the process. PLP lenders are authorized to make SBA credit decisions in-house rather than sending applications to the SBA for review, cutting approval time from weeks to days.

SBA Loan Timeline: What to Expect

The SBA loan process typically takes 60-90 days from application to funding, though it can stretch longer for complex deals. The timeline breaks down roughly as follows: 1-2 weeks for initial application review and document collection, 2-4 weeks for underwriting and SBA authorization, and 2-3 weeks for closing and disbursement. SBA Express loans move faster because the lender handles SBA authorization internally, cutting that middle phase to 36 hours. However, the lender still needs time for their own underwriting, so total time is usually 30-45 days. You can accelerate the process by submitting complete documentation upfront, responding quickly to lender questions, and choosing a PLP lender who does not need to send your file to the SBA. The slowest part of many SBA loans is appraisals and environmental reviews for real estate transactions, which can add 3-6 weeks on their own. If your loan involves property, get the appraisal ordered as early as possible.

Payment Breakdown

Payment breakdown: $350,000.00 principal (69.7%), $151,889.75 interest (30.3%)

Principal

$350,000.00 (69.7%)

Interest

$151,889.75 (30.3%)

How This Calculator Works

This calculator computes the SBA guarantee fee using the tiered schedule: 2% of the guaranteed portion for loans up to $150,000, 3% for $150,001-$700,000, and 3.5% for loans above $700,000. The guaranteed portion equals the loan amount multiplied by the guarantee percentage you select (75% or 85%). The guarantee fee is added to the loan principal, reflecting the common practice of financing the fee. Monthly payments are then calculated using the standard amortization formula on the total financed amount (original loan plus guarantee fee). This model assumes a fixed interest rate throughout the term. In practice, many SBA loans have variable rates tied to the prime rate that adjust quarterly, which means your actual payments may change over time. The calculator also does not include the annual SBA servicing fee (approximately 0.55% of the guaranteed balance), which lenders typically build into the interest rate.

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Disclaimer: This calculator provides estimates for informational purposes only. Results are based on the information you provide and standard financial formulas. Actual loan terms, rates, and payments may vary. This is not financial advice. Please consult with a qualified financial professional and verify all figures with your lender before making borrowing decisions.