Foster expenses scattered across a dozen volunteer homes, donated vet care that needs to be valued correctly, and a Form 990 that's easy to assume doesn't apply to you — we handle the accounting specific to animal welfare work, so you can focus on the animals.
Animal rescues face a bookkeeping challenge most charities don't: a meaningful share of your real costs happen inside individual foster homes, not at a central facility, which means expenses are scattered across volunteers who weren't necessarily asked to keep receipts. On top of that, donated veterinary care, supplies, and services need to be valued correctly for your books and for donor acknowledgment, and many rescues genuinely don't realize Form 990 filing applies to them at all.
At Mercer Flanagan, we've worked with animal rescue organizations and shelters in Frederick and surrounding counties for decades. We know how to set up foster expense tracking that doesn't burden your volunteers. We know how in-kind veterinary donations should be valued. And we're here year-round — not just at filing deadline.
"The rescues that come to us usually have the same gap: foster volunteers are quietly covering food and vet costs out of pocket, with no system to capture or reimburse it, and nobody's filed a Form 990-N in years because the organization felt too small and informal for it to apply. Neither problem is hard to fix once we see it."
We work with:
These are the situations we hear about most often from new animal welfare clients.
Food, supplies, and vet visits paid by individual fosters often go untracked, meaning the organization's real cost per animal is understated and fosters aren't being reimbursed or properly thanked for what they've covered.
Discounted or pro bono veterinary services need to be recorded at fair market value with documentation from the provider. Skipping this understates your financials and makes it harder to properly acknowledge the donation.
Small, informal, or foster-based rescues often assume they're too small for any filing requirement. Even the simplest organizations generally still need to file Form 990-N, and missing three years triggers automatic revocation.
Branded merchandise sales or other retail activity beyond standard adoption fees and fundraisers may need a separate look for unrelated business income tax purposes.
If you run distinct programs — a spay/neuter initiative, a medical fund, general rescue operations — tracking costs by program rather than blending them helps you report accurately to grant funders and your board.
Donations of $250 or more require a written acknowledgment letter, and missing this puts your donors' deductions at risk. This is easy to lose track of in a volunteer-run organization without a system.
We help set up a simple system for fosters to document and get reimbursed for food, supplies, and vet costs, so your true cost per animal is captured accurately without burdening your volunteers.
We help you properly value and document donated veterinary care, supplies, and services, both for your financial statements and for donor acknowledgment purposes.
We confirm the correct filing tier for your organization's size and prepare your Form 990-N, 990-EZ, or full Form 990 accordingly, even for the smallest foster-based rescues.
Nonprofit Tax & Bookkeeping →We help evaluate merchandise sales and other retail activity for unrelated business income tax exposure, separate from standard adoption fees and fundraising events.
We set up tracking by program — spay/neuter initiatives, medical funds, general operations — so you can report accurately to grant funders and give your board real visibility.
Clean, current books built around how your organization actually operates, whether that's foster-based, facility-based, or a mix of both.
QuickBooks Support & Training →These are the recurring compliance and bookkeeping areas that matter most for animal welfare organizations.
Compliance requirements always depend on your organization's specific size, operating model, and funding sources. We help confirm what applies to you and make sure it's documented properly so it holds up if reviewed.
Most accounting firms treat nonprofit work as a side service, and treat foster-based organizations as too small to bother with structured bookkeeping. We do neither. You won't be handed off to a junior associate, and you won't be told your rescue is too informal for proper books. You get a CPA who knows your organization and your mission.
Year Mercer Flanagan was founded in Frederick, MD
Years serving local nonprofits, businesses & professionals
Rated by clients across Frederick County
Access to your CPA — not just at filing deadline
Year-round access to your CPA. Questions get answered when your board has them, not weeks later.
We understand how to build bookkeeping around a foster-based model, not just a facility.
We're based in Frederick, MD. We know this community and we're not going anywhere.
We don't just file your 990. We watch for the issues that could put your status at risk.
Book a free 20-minute consultation. We'll tell you honestly whether we can help — and what it would cost. No pressure, no obligation.
Book a Free Consultation