Flexible Pay As You Go

30-day money-back guarantee
No hidden fees; prices include maintenance and support.
Discounts for students and members of the academic, government or non-profit organizations

The 30-day money-back guarantee excludes subscriptions billed every month.


We accept nearly all payment methods. You can pay using any major credit cards, checks, PayPal, Amazon Pay, Bank / Wire transfer, or purchase order. If you have any questions or need more information, please do not hesitate to contact us. Please send purchase orders to [email protected].

Yes! We offer volume discounts on all subscription plans.

2 – 45%
5 – 910%
10 – 2415%
25 – 4917.5%
50 & moreContact us for a special price

The volume discount is applied automatically during the self-checkout process.

Yes, we use FastSpring for online order processing. FastSpring is PCI compliant; they adhere to the Payment Card Industry Data Security Standard and are regularly audited.

This website takes every precaution to protect our users’ information. When users submit sensitive information via the website, your information is protected both online and off-line. When our registration/order form asks users to enter sensitive information (such as credit card number), that information is encrypted and is protected with the best encryption software in the industry – SSL. While on a secure page, such as our order form, the lock icon on the bottom of Web browsers such as Netscape Navigator and Microsoft Internet Explorer becomes locked, as opposed to un-locked, or open, when you are just ‘surfing’.

To protect against security compromises, FastSpring never stores credit card numbers.

Yes! we accept purchase orders from all corporate customers.

Send us the official purchase order (PO) on company letterhead via e-mail or fax, and please include the following information:

  • The product name
  • The requested quantity
  • The name the product will be licensed to.
  • Your billing address and your delivery address, if different.
  • Name, phone, and fax number of the contact person for your order.
  • The e-mail address to which the order confirmation and invoice should
    be sent, and your e-mail delivery address, if different.
  • The requested billing currency.
Customer Service – USA
Language: English
Spider Financial Corp
53 W Jackson Blvd. Ste 1629
Chicago, IL 60604
+1(312) 324-0367 (Phone)

To initiate a wire transfer, please use the following bank and our account information

Bank Information:

  1. Name: JPMorgan Chase Bank N.A.
  2. Address: 55 E Monroe Street, Chicago, IL 60603, USA.
  3. ABA Routing: 021000021
  4. SWIFT Code: CHASUS33

Account Information

  1. Name: Spider Financial Corp.
  2. Address: 53 W Jackson Blvd Suite 1629, Chicago, IL 60604, USA.
  3. Number: Please, contact us.

The delivery is instant for credit card payments. You will have the add-in in minutes if you pay by credit cards.

We do not provide CD/DVD delivery of our software. Our add-ins are can only be delivered electronically (aka. download). After you purchase the add-in, we will send you an email with the issued license key and a link to download the program. You may download the add-in at any time from our download area.
No, all NumXL subscriptions provide you with the full-featured and complete version of NumXL.

Educational, government, and non-profit organizations qualify for a generous 25% discount off our listed prices. Further, you can use this discount along with a volume discount. IMPORTANT: Students qualify for deep-discounted pricing.

Spider Financial complies with all VAT requirements through our reseller FastSpring. VAT will be applied only to orders where a valid VAT ID has not been supplied at the time of payment in accordance with tax legislation.

We have several VAT numbers available through our reseller FastSpring.
EU VAT Number1EU826012240
Switzerland VATCHE-407.203.569
Norway VAT22017474
Japan NTA00062
1. Our VAT number cannot be verified by the usual VAT validation services but would have to be verified by the Mutual Assistance Office (a sub-department of the local VAT collection agency) in each EU country from a database available to those offices. 2. If you need verification of FastSpring’s VAT number for Norway, you can contact [email protected] or [email protected].
Technically and legally, FastSpring, our payment processor, is considered the vendor of record, so we follow all laws and regulations as if the sale were made from California in the United States.
For most sales in the US, we do not charge a sales tax. However, our payment processor (FastSpring) will automatically collect sales tax in Alabama, Maine, Nebraska, South Dakota, and Tennessee in accordance with local state laws. If you are a tax-exempt organization in one of these states, you can submit a tax reimbursement request to our payment processor at [email protected]. Be sure to include:
  1. Tax-exempt form
  2. Order reference number (ex: SP######-####-#####)

EU countries will likewise automatically incur VAT (value-added tax). These include the following nations: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Croatia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovenia, Slovak Republic, Spain, Sweden, and the United Kingdom.

If you are an EU tax-exempt organization and have a valid VAT ID, you can simply enter it during checkout. Doing so should void any previously applied taxes.

If you’re wondering about sales tax in other countries, or simply want to know more about our payment processor’s tax policies, please refer to their site below:

You can manage your NumXL subscriptions: view active subscriptions, update payment methods, download invoices, or cancel subscriptions via our customer portal: https://spiderfinancial.onfastspring.com/account/
The license key takes the form of 79F7-C8-XX-XX-XXXX. We send the license key in a separate email at the time of your NumXL purchase or, for trial users, with your 14-day free trial request email.
Furthermore, you may use the NumXL License manager to look up your license key using your email address.
Step 1: Launch NumXL license manager from the start menu.
Step 2: Click on the Lookup key button.
Step 3: Enter your name and email address.
Step 4: A confirmation message pops up.
Step 5: After a few minutes, you should receive an email with the license key associated with the email address. Please, check your inbox and spam folders.
For a step-by-step guide with images, please visit this page
Absolutely! Send an email to [email protected], and we’ll set up a time to do a live demo with you over the internet (or in-person if you are in Chicago, IL).
Yes, we do!  To learn more about the NumXL site license, please see this article! see this article! Please, contact us at [email protected] for more details.
Yes. We encourage companies to sign license agreements with us as they facilitate better license management. For more information, please contact us by phone at +1 (312) 324-0367 or via email at [email protected].
Spider Financial is pleased to inform you that all products we offer to the US government and US government contractors and grant recipients are NDAA 2019 compliant. Specifically, none of our products contain components from any of the companies highlighted in Section 889. Our products are well suited for SMB, enterprise, and critical applications where compliance is essential, such as government, utilities, commercial, campuses, and retail. For more information on procurement or contract assurances, including a declaration of the NDAA compliance letter required for a proposal, please contact [email protected].