Old Calculators?(Before Unified Form)

In case you’re wondering, where do you find the old calculators? The Sole Calculator, Shared Calculator, and Split Calculator can be found here. You can get them from 2 places:

Best way:

All input goes into the Unified Form. If the parenting arrangement you describe on the Unified Form fits one of the old DC Forms, the Unified Form will give you a button at the bottom of the form that will print the old DC Form using your input from the Unified Form. No extra input required even if the parenting arrangement changes! You can click HERE for some of the many features of Unified form.

Not so good way:

There are major problems with the traditional method of entering the needed information for either the Sole Custody, Shared Custody, and Split Custody calculations:

If you want to change from one parenting arrangement to another (such as from a Sole Custody calculation to a Shared Custody calculation), you have to use a different form and reenter all your information again.
The primary entry forms for the three types of arrangements are very different from each other. They have different terminology and a different order for entering the information.
When the Virginia General Assembly changed the Child Support statute to include combinations of parenting arrangements, the existing 3 forms would have to be replaced with 6 forms.

We strongly encourage you to use the Unified Form to get to the DC Form for output (See “Best way” above). It addresses all these issues. You can click HERE for some of the many features of Unified form.

In 2025 when the legislature updated the guideline calculations, we were this close (picture thumb and forefinger pressed tightly against each other) to eliminating the older input forms. It took many days to bring the older forms up to date, and we promised ourselves we won’t do it again. So consider yourself warned!!!

But if you insist, you can use these links to get to the old DC Forms for input. In 2019, we warned you that these input forms will be disappearing. Important Notice: Click to read about DC Form Input Ending explaining why we really discourage you from using the old forms for input. Ok, you still want to use the old forms for entry:

Sole Support Calculator
One parent is with the child(ren) for less than 91 days.
Shared Support Calculator
Each parent is with the child(ren) for 91 or more days.
Split Support Calculator
One child (or more) with one parent most of the time and another child (or more) with other parent most of the time.

If you have ANY doubt about which calculator to look at, please consult your attorney!

If you want to review the actual child support guideline statute, take a look at: Virginia Section 20-108.2.

DC Form Input Ending

In 2019, we completed a major upgrade to the Unified form. We made it extra easy to use the data in the Unified Form to print the DC Forms. There are huge advantages to using the Unified form for input even if you're producing one of the DC-637, 638, or 640 forms:

▬Results Page shows you the important inputs into the calculation and the key results for all parenting arrangements.

▬See and Change Amount Frequencies for each relevant line rather than making a single "monthly/non-monthly" decision for the entire form.

▬Print and Email DC Forms just like the Unified Form. All forms and additional schedules can be emailed to yourself (or anyone else).

▬Print Exception Details Separately if desired. If you want to see the detailed math behind the three exceptions that are reported on the Unified form (health insurance > 5% of gross, parent’s gross below 150% of poverty level, and rare case where sole calculation amount might be used for a shared calculation), you can request that as a separate report.

▬Print Calculation Details Separately if desired. If you want to see the details behind the child support guideline calculations, you can print them separately.

▬Less clutter! Show or hide line numbers and line-by-line instructions.

And in 2019, we warned that we would be eliminating the DC 637, 638, and 640 input forms! But we didn't, and some of you keep using them. New/old dogs and new/old tricks, right? When the 2025 Guidelines were updated, we updated even the older 3 input forms. The unified form took almost no time to update, but the older input forms took many days due to the older design strategies that we didn't anticipate updating.

Please consider you're on borrowed time with these input screens. Really! They will be eliminated.

In the meantime, if you use the old DC forms for input, the results may be off by a dollar or so from the Unified form. EXCEPT there is one situation where it could be way more than a single dollar caused by rounding differences: The Unified Form and the DC 637, 638, and 640 forms it produces calculate credits related to SSDI disability payments after all other calculations and adjustments. We believe that this is the correct calculation under the statute. The old DC input forms calculate the SSDI adjustments and credits before the other adjustments. In this situation, you could end up with a different result when comparing the new print-only DC forms with the DC input forms.

Old Calculators?(Before Unified Form)

Best way:

Not so good way:

Why use the Unified Form even if you're doing a traditional (i.e. Sole, Split, or Shared) calculation?

Here are some unique features of this form.

DC Form Input Ending